Answer:
Use you calculator.
Step-by-step explanation:
There will be a way on your calculator to do tan^-1. It may be called arctan. They are the same thing.
I'm fairly sure that the answer is an ecosystom.
The answer would be -21.6
Trigonometric Functions:


You have the angle and the adjacent. You need to find the hypotenuse (PR). Therefore, you use cos.

Rearrange the formula to find H (PR):

14.463 ~ 14.5
<h2>
14.5°</h2>