Question

Can someone help me solve this please? It’s for trigonometry and I think I’m supposed to use sin cos or tan

Answer 1

angle x° is equal to 58.03°

Explanation:

Using pythagorean theorem, we can find the length of opposite side being the square root of 17²-9² which is 14.42. After you would use inverse tan (Tan^-1) and put in 14.42/9 and get the answer.

Answer 2

x° ≈ 58.0°

Explanation:

Given a right triangle with an acute angle marked x°, the adjacent side marked 9, and the hypotenuse marked 17, you want the measure of the angle.

Cosine

You are given the side adjacent to the angle, and the hypotenuse. The mnemonic SOH CAH TOA reminds you that ...

Cos = Adjacent/Hypotenuse

cos(x°) = 9/17

The angle is found using the inverse cosine function.

x° = arccos(9/17)

x° ≈ 58.0°

The measure of the angle marked x° is about 58.0°.

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Additional comment

You will notice the calculator is set to DEG mode, so the angle is given in degrees.