Q&A for How to Solve Trigonometric Equations

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If I know two sides of a triangle, how can I find the hypotenuse (to the nearest whole number)?

Community Answer

Square the lengths of the two sides you know, add the results together, then take the square root of that result and round it to the nearest whole number.

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Question

How do I find the third side of a triangle if I’m only given 1 side length and 1 angle?

Donagan

Top Answerer

Knowing one side and one angle is not enough information to find any of a triangle's other components.

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Question

What type of calculator do I need to do trigonometry?

Community Answer

A normal scientific calculator is fine. A graphics calculator will also work.

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Question

How do you get the length of a hypotenuse?

Community Answer

Use the Pythagorean theorem. c = √(a² + b²), where c is the hypotenuse, and a and b are the two legs of the triangle.

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Question

sin 58° = cos p°. What is p?

Community Answer

p is 32°, or the complement of 58°. (The complement of an angle is the difference between that angle and 90°.)

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