### Home > GC > Chapter 5 > Lesson 5.1.4 > Problem5-38

5-38.

For each triangle below, write a trigonometric equation relating $a$, $b$, and $θ$.

$\text{Recall: sin } \theta =\frac{\text{opp.}}{\text{hyp.}}$

$\text{cos }\theta = \frac{\text{adj.}}{\text{hyp.}}$

$\tan\theta=\frac{\text{opp}.}{\text{adj}.}$

1. $\sin \theta=\frac{b}{a}$

1. $\tan\theta=\frac{a}{b}$