Find the missing side of a triangle calculator

Jun 5, 2023 · Besides the two sides, you need to know one of the inner angles of the triangle. Let's say it's the angle γ = 30° between the sides 5 and 6. Then: Recall the law of cosines formula c² = a² + b² - 2ab × cos (γ) Plug in the values a = 5, b = 6, γ = 30°. We obtain c² = 25 + 36 - 2 × 5 × 6 × cos (30) ≈ 9. Therefore, c ≈ 3.

Find the missing side of a triangle calculator. We can use trigonometry to work out the unknown sides of a right-angled triangle by using SOHCAHTOA. Label the sides of the right-angled triangle that we have information about. Choose the trig ratio we need. Substitute the values from the triangle into the function. Calculate the unknown side, rearranging if necessary.

Jun 5, 2023 · Compute the sum of squares of the two smaller sides. Compare it to the square of the longest side . If the sum is greater, your triangle is acute. If they are equal, your triangle is right. If the sum is shorter, your triangle is obtuse. This method is based on the law of cosines.

Δ Side, Angle, & Area Calculator. Triangular laws of congruence state that two triangles are equivalent if they have the same values for side-angle-side (SAS), angle-side-angle (ASA), or side-side-side. It follows that if you know the SAS, ASA, or SSS values for a triangle, you can compute the missing sides and angles, as well as the area!Answer: The length of the third side of the triangle is 7.63 units. Example 3: In triangle ABC, ∠C = 42° and ∠A = 33°, and the side opposite to angle C is 12.5 units. Find the length of the side of the triangle opposite to angle A. Solution: We have ∠C = 42° and ∠A = 33°, c = 12.5 units. We need to find the side 'a'.Solve for the missing side. You divide by sin 68 degrees, so. Repeat Steps 3 and 4 to solve for the other missing side. Setting b and c equal to each other, you have this equation: Cross multiply: Divide by sin 68 degrees to isolate the variable and solve: State all the parts of the triangle as your final answer.Example 3: find the missing side using the cosine rule. Find the length of z for triangle XYZ. Write your answer to a suitable degree of accuracy. Label each angle (A, B, C) and each side (a, b, c) of the triangle. Show step. In order to find the length of z, we need to know the opposite angle at Z.To find the area of a triangle without a right angle, you multiply one-half the base by the height. Obtuse triangles are included in this group. The base can be any side of the triangle. However, you do need to pick one side because you mea...Aug 28, 2023 · This hypotenuse calculator has a few formulas implemented - this way, we made sure it fits different scenarios you may encounter. You can find the hypotenuse: Given two right triangle legs; Use the Pythagorean theorem to calculate the hypotenuse from the right triangle sides. Take a square root of sum of squares: c = √(a² + b²) We know that the right-angled triangle follows Pythagoras Theorem. According to Pythagoras Theorem, the sum of squares of two sides is equal to the square of the third side. (Perpendicular)2 + (Base)2 = (Hypotenuse)2. Using the above equation third side can be calculated if two sides are known.Oct 3, 2023 · Uses the law of cosines to calculate unknown angles or sides of a triangle. In order to calculate the unknown values you must enter 3 known values. To calculate any angle, A, B or C, enter 3 side lengths a, b and c. This is the same calculation as Side-Side-Side (SSS) Theorem. To calculate side a for example, enter the opposite angle A and the ...

We can calculate the hypotenuse of the 45°-45°-90° right triangle as follows: Let side 1 and side 2 of the isosceles right triangle be x. Apply the Pythagorean Theorem a 2 + b 2 = c 2, where a and b are side 1 and 2 and c is the hypotenuse. x 2 + x 2 = 2x 2. Find the square root of each term in the equation. √x 2 + √x 2 = √(2x 2) x + x ...This calculator completes the analysis of an irregular triangle given any three inputs. Please input only three values and leave the values to be calculated blank. If all the inputs are angles the calculator will calculate the proportionate length of the sides which can then be used to scale up depending on actual size requirements.The Triangle of Life Myth - The triangle of life myth is discussed in this section. Learn about the triangle of life myth. Advertisement Doug Copp has become famous in some circles for his Triangle of Life earthquake-survival method. You ma...All that you need are the lengths of the base and the height. In a right triangle, the base and the height are the two sides that form the right angle. Since multiplying these two values together would give the area of the corresponding rectangle, and the triangle is half of that, the formula is: area = ½ × base × height.Go back to Calculators page. To use the right angle calculator simply enter the lengths of any two sides of a right triangle into the top boxes. The calculator will then determine the length of the remaining side, the area and perimeter of the triangle, and all the angles of the triangle. Area and Perimeter of a Triangle. Jun 5, 2023 · To use this tool for finding missing sides or angles in similar right triangles, you need to know at least 2 sides of the first triangle. Additionally, you need to know at least one of the following: The scale factor; or; At least 2 sides of the second triangle. The steps to use this similar right triangles calculator are as follows:

In the example we are given right triangle 𝐴𝐵𝐶, with its right angle at 𝐶. We are also given that angle 𝐵 measures 50°, and that the length of side 𝐴𝐵 is 6. And we are told to find the length of side 𝐴𝐶. The trigonometric ratios only work for the non-right angles, in this case either angle 𝐴 or angle 𝐵.Solve missing sides and angles of a right angle triangle. Get step-by-step solutions. Try Open Omnia Today.h = a × √3 / 2. Substituting h into the first area formula, we obtain the equation for the equilateral triangle area: area = a² × √3 / 4. 2. Using trigonometry. Let's start with the trigonometric triangle area …Triangle Calculator. Enter the values of any three parameters of a triangle (three sides, or one side and two angles, or two sides and one angle) in the fields of the Triangle Calculator and calculate the missing parameters as well as the perimeter and the area of the triangle. A B C.The law of cosines allows us to find angle (or side length) measurements for triangles other than right triangles. The third side in the example given would ONLY = 15 if the angle between the two sides was 90 degrees. In the example in the video, the angle between the two sides is NOT 90 degrees; it's 87.

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Collectively, these relationships are called the Law of Sines. sinα a = sinβ b = sinλ c s i n α a = s i n β b = s i n λ c. Note the standard way of labeling triangles: angle α α (alpha) is opposite side a; a; angle β β (beta) is opposite side b; b; and angle γ γ (gamma) is opposite side c. c. See (Figure).How to use this calculator Triangle calculator: simply input 1 side length + any 2 other values, and TrigCalc’s calculator returns missing values in exact value and decimal form – in addition to the step-by-step calculation process for each missing value.How do you calculate unknown or missing side of right triangle? The length of unknown third side of right triangle can be found by using Pythagoras theorem. a = √(c^2 - b^2) is the formula to find the length a:, b = √(c^2 - a^2) is the formula to find the length b: and c = √(a^2 + b^2) is the formula to find the length c:.Go back to Calculators page. To use the right angle calculator simply enter the lengths of any two sides of a right triangle into the top boxes. The calculator will then determine the length of the remaining side, the area and perimeter of the triangle, and all the angles of the triangle. Area and Perimeter of a Triangle.The missing side, a = 17.3. For example, find the missing side on this triangle. To find a missing side, Pythagoras or trigonometry can be used. Since we know one side and know an angle, we use trigonometry. We would need to know the 2 other sides to use Pythagoras. We want the opposite side and we know the hypotenuse.EXAMPLES. example 1: Find the hypotenuse of a right triangle in whose legs are and . example 2: Find the angle of a right triangle if hypotenuse and leg . example 3: Find the hypotenuse if and leg . example 4: Find the area of a right triangle in which and.

Given a right angle triangle, the method for finding an unknown side length, can be summarized in three steps : Step 1: Label the side lengths, relative to the given interior (acute) angle, using "A", "O" and "H" (label both the given side length as well as the one you're trying to find). Step 2: Using the labels, made in step 1, look for the ...The height of the triangle through the semi-perimeter: h_a = \dfrac {2\sqrt {p (p-a) (p-b) (p-c)}} {a} where a - side on which the height falls, b, c - the lengths of the other two sides, p - semi-perimeter . Height of an equilateral triangle: h = a\dfrac {\sqrt {3}} {2} where a - side of a triangle. This triangle height calculator will help ...To find the missing sides or angles of the right triangle, all you need to do is enter the known variables into the trigonometry calculator. You need only two given values in the case of: one side and one angle; two sides; area and one side; Remember that if you know two angles, it's not enough to find the sides of the triangle.Free Isosceles Triangle Sides & Angles Calculator - Calculate sides, angles of an isosceles triangle step-by-stepAlso, if you know two sides of the triangle, you can find the third one from the Pythagorean theorem. However, the methods described above are more useful as they need to have only one side of the 30 60 90 triangle given. ... Thanks to this 30 60 90 triangle calculator, you find out that: The shorter leg is 6.35 in - because a = b√3/3 = …What is a 90 Degree Triangle? Everything in trigonometry seems to revolve around the 90-degree triangle and its ratios. A 90 degree triangle is defined as a triangle with a right angle, or in other words, a ninety degree angle. Given any known side length of a 90-degree triangle and one other value (another side, angle, area value, etc), one can find all …Simply input the lengths of the two known sides, and the calculator will compute the length of the third side. The Pythagorean Theorem Calculator delivers accurate results complemented by a detailed step-by-step breakdown. Additionally, its graphical representation enhances clarity, ensuring users gain a thorough understanding …Enter the lengths of any two sides of a right triangle and get the remaining side, the area, perimeter, and angles. Learn how to use the Pythagorean Theorem and trigonometry to …Given the area and one leg. As the area of a right triangle is equal to a × b / 2, then. c = √ (a² + b²) = √ (a² + (area × 2 / a)²) = √ ( (area × 2 / b)² + b²). To learn more about calculations involving right triangles visit our area of a right triangle calculator and the right triangle side and angle calculator.In manual calculations, We can use the Pythagorean formula to calculate the missing side of the right triangle. We have: a = 4. b = 8. Pythagorean theorem formula = \ (C = \sqrt {a 2 + b 2 }\) Put the values and proceed the step by step solution as follows: C = 42 + 82. C = 16 + 64.

Go back to Calculators page. To use the right angle calculator simply enter the lengths of any two sides of a right triangle into the top boxes. The calculator will then determine the length of the remaining side, the area and perimeter of the triangle, and all the angles of the triangle. Area and Perimeter of a Triangle.

Enter one, two, or three angles of your triangle - our obtuse triangle sides calculator will show you the answer straight away! Aside from identifying whether or not your triangle is obtuse, you may also use our tool to calculate its area! Go ahead and choose from multiple options available. The full list of triangle area calculators:To find the missing sides or angles of the right triangle, all you need to do is enter the known variables into the trigonometry calculator. You need only two given values in the case of: one side and one angle; two sides; area and one side; Remember that if you know two angles, it's not enough to find the sides of the triangle.Solve the triangle in Figure 10 for the missing side and find the missing angle measures to the nearest tenth. Figure 10. ... To find the remaining missing values, we calculate [latex]\alpha =180^\circ -85^\circ -48.3^\circ \approx 46.7^\circ [/latex]. ... Find all possible triangles if one side has length 4 opposite an angle of 50°, and a ...Special right triangles are the triangles in which all the 3 interior angles are defined and the sides have a fixed ratio. In these right-angled triangles, we can find the value of 2 missing sides if one side is given.The two special right triangles are also known as the 45°- 45°- 90° triangle and the 30°- 60°- 90° triangle.Free Triangles calculator - Calculate area, perimeter, sides and angles for triangles step-by-step. Solutions Graphing Calculators; New Geometry; Practice; Notebook . Groups Cheat Sheets. Sign in; Upgrade ... triangle. General Equilateral Isosceles Triangle Right Angled Law of Sines Law of Cosines. Correct Answer :) Let's Try Again :(Try to further …Calculator Use. A right triangle is a special case of a triangle where 1 angle is equal to 90 degrees. In the case of a right triangle a 2 + b 2 = c 2. This formula is …Use Pythagorean theorem to find isosceles triangle side lengths. CCSS.Math: 8.G.B.7. Google Classroom. Find the value of x in the isosceles triangle shown below. 8 8 8 x.For this type of triangle, we must use The Law of Cosines first to calculate the third side of the triangle; then we can use The Law of Sines to find one of the other two angles, and finally use Angles of a Triangle to find the last angle. See Solving "SAS" Triangles . 5. SSA. This means we are given two sides and one angle that is not the ... Fill in the lengths of any two sides (c being the hypotenuse), and this Pythagorean calculator will evaluate the third one.; You can also input the area and one of the triangle sides (a or b), and the Pythagorean theorem calculator will find the other missing variables.; Let's look at how to use this calculator through an example. …

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Use this Pythagorean theorem calculator to calculate the hypotenuse or the length of a right triangle’s missing leg. A right triangle’s hypotenuse is the side across the triangle’s right angle. You can find this side manually by performing a calculation with the hypotenuse formula which is also known as the Pythagorean theorem formula.This calculator calculates for the length of one side of a right triangle given the length of the other two sides. A right triangle has two sides perpendicular to each other. Sides "a" and "b" are the perpendicular sides and side "c" is the hypothenuse. Enter the length of any two sides and leave the side to be calculated blank.Uses the law of cosines to calculate unknown angles or sides of a triangle. In order to calculate the unknown values you must enter 3 known values. To calculate any angle, A, B or C, enter 3 side lengths a, b and c. This is the same calculation as Side-Side-Side (SSS) Theorem. To calculate side a for example, enter the opposite angle A and the ...If the only unknown side is the base side b, our steps depend on what information we have.Usually, we have the leg length a, the base angle α, and the vertex angle β.We can then apply trigonometry to one half of the isosceles triangle, which is a right triangle with angles α and β/2, a hypotenuse of length a, and a side of length b/2.From …Step 2: Next, form the ratio of corresponding side lengths where one of the side lengths involves the unknown, and set this ratio equal to the ratio found in Step 1. Step 3: Cross multiply and ...Named after the ancient Greek mathematician Pythagoras, this theorem states that: in a right-angled triangle, the square of the hypotenuse is equal to the sum of squares of other two sides. This theorem allows us to calculate for one missing side when we know the other two sides. The formula for this is: c² = a² + b².To find the missing side length: Fill in the angle, \gamma = 90° γ = 90°. Enter the length of side, a = 3 a = 3. Input the length of side, b = 4 b = 4. Using the …Using the triangle length calculator. Let ⊿ABC be a right-angled triangle having sides, a and b, forming the right angle, equal to 3 and 4, respectively. To find the missing side length: Fill in the angle, γ = 90 °. \gamma = 90° γ = 90°. Enter the length of side, a = 3. a = 3 a = 3.The angle side with a length of 24 is adjacent to the 35° angle, so it should be between this angle and the right angle of the triangle. Since your goal is to find the length of the side across from the 35° angle, and you know the adjacent sign, the best formula to use is tangent, or opposite over adjacent. ….

An easy to use, free perimeter calculator you can use to calculate the perimeter of shapes like square, rectangle, triangle, circle, parallelogram, trapezoid, ellipse, octagon, and sector of a circle. Formulas, explanations, and graphs for each calculation. Perimeter of a triangle calculation using all different rules: SSS, ASA, SAS, SSA, etc.Named after the ancient Greek mathematician Pythagoras, this theorem states that: in a right-angled triangle, the square of the hypotenuse is equal to the sum of squares of other two sides. This theorem allows us to calculate for one missing side when we know the other two sides. The formula for this is: c² = a² + b².Sep 27, 2023 · This special right triangles calculator will help you solve the chosen triangle's measurements in a blink of an eye. Select the triangle you need and type the given values – the remaining parameters will be calculated automatically. The special right triangles are right triangles for which simple formulas exist. Simply input the lengths of the two known sides, and the calculator will compute the length of the third side. The Pythagorean Theorem Calculator delivers accurate results complemented by a detailed step-by-step breakdown. Additionally, its graphical representation enhances clarity, ensuring users gain a thorough understanding …An online law of sines calculator allows you to find the unknown angles and lengths of sides of a triangle. When we dealing with simple and complex trigonometry sin(x) functions, this calculator uses the law of sines formula that helps to find missing sides and angles of a triangle. So, read on to get a complete guide about sine laws.About Hypotenuse Calculator . Discover how to find the hypotenuse of a right-angled triangle with ease (Step by Step). FAQ. ... Here’s the formula you need: where c is the length of the hypotenuse, and a and b are the lengths of the triangle’s other two sides. Understanding the Pythagorean Theorem.Triangle SAS. Calculate the triangle area and perimeter if the two sides are 105 dm and 68 dm long and angle them clamped is 50 °. Scalene triangle. Solve the triangle: A = 50°, b = 13, c = 6. Vector sum. The magnitude of the vector u is 12 and the magnitude of the vector v is 8. The angle between vectors is 61°.All that you need are the lengths of the base and the height. In a right triangle, the base and the height are the two sides that form the right angle. Since multiplying these two values together would give the area of the corresponding rectangle, and the triangle is half of that, the formula is: area = ½ × base × height.side a = height - one solution. Side a just "reaches" side c and forms a right triangle. • side a > height - two solutions. Find the missing side of a triangle calculator, If you're dealing with trigonometry and right triangles, this trig calculator for right triangles is here for you. This tool uses trigonometry to calculate these triangles, as long as you know: Two of its sides; One …, This special right triangles calculator will help you solve the chosen triangle's measurements in a blink of an eye. Select the triangle you need and type the given values – the remaining parameters will be calculated automatically. The special right triangles are right triangles for which simple formulas exist., Two triangles can be identified in a quadrilateral with one diagonal drawn. Eight triangles can be identified in a quadrilateral with both diagonals drawn. With the diagonal or diagonals drawn, look for a triangle with enough side and angle measures that you can use the law of sines or law of cosines., For this type of triangle, we must use The Law of Cosines first to calculate the third side of the triangle; then we can use The Law of Sines to find one of the other two angles, and finally use Angles of a Triangle to find the last angle. See Solving "SAS" Triangles . 5. SSA. This means we are given two sides and one angle that is not the ..., This calculator solves the Pythagorean Theorem equation for sides a or b, or the hypotenuse c. The hypotenuse is the side of the triangle opposite the right angle. For right triangles only, enter any two values to find the third. See the solution with steps using the Pythagorean Theorem formula. This calculator also finds the area A of the ..., Example 3: find the missing side using the cosine rule. Find the length of z for triangle XYZ. Write your answer to a suitable degree of accuracy. Label each angle (A, B, C) and each side (a, b, c) of the triangle. Show step. In order to find the length of z, we need to know the opposite angle at Z., a/sin (A) = b/sin (B) = c/sin (C) = 2R. Where R is the circumradius of the triangle. Once you have the length of the two remaining sides, you can use the Law of Cosines to find the measure of the angle (C) that is not given as: c 2 = a 2 + b 2 - 2ab * cos (C) You can also use the given angles and side length to find the area of the triangle ..., Uses the law of cosines to calculate unknown angles or sides of a triangle. In order to calculate the unknown values you must enter 3 known values. To calculate any angle, A, B or C, enter 3 side lengths a, b and c. This is the same calculation as Side-Side-Side (SSS) Theorem. To calculate side a for example, enter the opposite angle A and the ..., Calculator Use. Calculate certain variables of a parallelogram depending on the inputs provided. Calculations include side lengths, corner angles, diagonals, height, perimeter and area of parallelograms. A parallelogram is a …, Enter Side Lengths and either top Angle or Base length to calculate all other side lengths, angles, triangle height and area. Top Angle Base Angles 30 ..., Keisan English website (keisan.casio.com) was closed on Wednesday, September 20, 2023. Thank you for using our service for many years. Please note that all registered data will be deleted following the closure of this site., To use this tool for finding missing sides or angles in similar right triangles, you need to know at least 2 sides of the first triangle. Additionally, you need to know at least one of the following: The scale factor; or; At least 2 sides of the second triangle. The steps to use this similar right triangles calculator are as follows:, Solve for the missing side. You divide by sin 68 degrees, so. Repeat Steps 3 and 4 to solve for the other missing side. Setting b and c equal to each other, you have this equation: Cross multiply: Divide by sin 68 degrees to isolate the variable and solve: State all the parts of the triangle as your final answer., Missing Hypotenuse. Square the lengths of the two legs if you are looking for the hypotenuse. For example, if the two legs of your right triangle measure 6 inches and 8 inches, square 6 and 8 to get 36 and 64. Add the two results from step 1. In this example, the sum of 36 and 64 is 100. The square root of the result from step 2 equals the ..., See full list on calculator.net , To find the perimeter of a triangle knowing its three sides (SSS triangle), all you have to do is add the three known sides. For example, the perimeter of a triangle with sides a = 3 cm, b = 2 cm and c = 4 cm can be calculated as follows: perimeter_SSS = a + b+ c. perimeter_SSS = 3 cm + 2 cm + 4 cm. perimeter_SSS = 9 cm, That means that side c c c is perpendicular to the bases, and therefore equal to the height c = h c = h c = h. However, we don't know c c c, so we'll have to find it still. To do this, draw the height of our trapezoid that goes from the vertex between b b b and d d d. Together with d d d and a part of a a a, it forms a right triangle., The six trigonometric functions are sin, cos, tan, csc, sec, and cot. These trig functions allow you to find missing sides of triangles. Trig functions are ratios in a right triangle relative to an angle. Sin of an angle is the ratio of the side length opposite to the angle to the hypotenuse length. Cos of an angle is the ratio of the side ..., How to use 3D trigonometry to find a missing angle or side length. In order to find a missing angle or side within a 3-dimensional shape: Calculate the necessary missing angle or side of a triangle. Sketch and label the second triangle using information from Step 1. Calculate the missing angle or side of the final triangle., Solution: The sides of the triangle are given as 28 units, 39 units, and 18 units. Therefore, the perimeter of the triangle = sum of the sides = (28 + 39 + 18) units = 85 units. Example 3: The length of the sides of a scalene triangle ABC are 4 units, 3 units, and 5 units. Calculate its area., Example 1: Find the perimeter of a scalene triangle whose sides have the lengths 12 feet, 8 feet, and 10 feet. Solution: To find the perimeter of the scalene triangle, we require the lengths of three sides i.e a, b, and c. The measurements are 12 feet, 8 feet, and 10 feet. The formula for finding the perimeter of the scalene triangle is P = a + b + c, Use the AAS triangle calculator to determine the area, third angle, and the two missing sides of this type of triangle. Let's have a look at how to use this tool: In the first section of the calculator, enter the known values of the AAS triangle. These are the two consecutive angles β and α and the non-included side a.; In the section Results, the …, For this type of triangle, we must use The Law of Cosines first to calculate the third side of the triangle; then we can use The Law of Sines to find one of the other two angles, and finally use Angles of a Triangle to find the last angle. See Solving "SAS" Triangles . 5. SSA. This means we are given two sides and one angle that is not the ... , The Triangle of Life Myth - The triangle of life myth is discussed in this section. Learn about the triangle of life myth. Advertisement Doug Copp has become famous in some circles for his Triangle of Life earthquake-survival method. You ma..., For a right-angled triangle, follow these steps to calculate the length of a side, \ (x\), when another side and an angle Ɵ is given: \ (a\). Choose the trigonometric ratio that contains the two ..., Calculator Use. Uses the law of sines to calculate unknown angles or sides of a triangle. In order to calculate the unknown values you must enter 3 known values. Some calculation choices are redundant but are included anyway for exact letter designations., Uses the law of cosines to calculate unknown angles or sides of a triangle. In order to calculate the unknown values you must enter 3 known values. To calculate any angle, A, B or C, enter 3 side lengths a, b and c. This is the same calculation as Side-Side-Side (SSS) Theorem. To calculate side a for example, enter the opposite angle A and the ..., Step by step guide to finding missing sides and angles of a Right Triangle. By using Sine, Cosine or Tangent, we can find an unknown side in a right triangle when we have one length, and one angle (apart from the right angle). Adjacent, Opposite and Hypotenuse, in a right triangle is shown below. Recall the three main trigonometric functions: , We know that the right-angled triangle follows Pythagoras Theorem. According to Pythagoras Theorem, the sum of squares of two sides is equal to the square of the third side. (Perpendicular)2 + (Base)2 = (Hypotenuse)2. Using the above equation third side can be calculated if two sides are known., Your scientific (or graphing) calculator knows all the trigonometric values for any angle. Your calculator, should have , , and buttons. You can use your calculator and the trigonometric ratios is to find the missing sides of a right triangle by setting up a trig equation. What if you were given a 20-70-90 triangle?, Where a and b are two sides of a triangle, and c is the hypotenuse, the Pythagorean theorem can be written as: a 2 + b 2 = c 2 EX: Given a = 3, c = 5, find b: 3 2 + b 2 = 5 2 9 + b 2 = 25 b 2 = 16 => b = 4. Law of sines: the ratio of the length of a side of a triangle to the sine of its opposite angle is constant., The law of cosines allows us to find angle (or side length) measurements for triangles other than right triangles. The third side in the example given would ONLY = 15 if the angle between the two sides was 90 degrees. In the example in the video, the angle between the two sides is NOT 90 degrees; it's 87. , Enter three values of a triangle's sides or angles (in degrees) including at least one side. ... Click "solve" to find the missing values using the Law of Sines ...