# Chapter 4 - Section 4.8 - Applications of Trigonometric Functions - Exercise Set - Page 637: 15

$S 80^{\circ} W$

#### Work Step by Step

The trigonometric ratios are as follows: $\sin \theta= \dfrac{opposite}{hypotenuse}$ ; $\cos \theta= \dfrac{Adjacent}{hypotenuse}$ and $\tan \theta= \dfrac{Opposite}{Adjacent}$ The angle is from the vertical axis $S$ to the line joining the point $C$. So, our required answer is: $S 80^{\circ} W$

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.