Given the right triangle below, evaluate $\(\cos\)\(\theta\)$.

Rewrite the expressions in Exercises 5–10 in terms of exponentials and simplify the results as much as you can.

8. cosh(3x) - sinh(3x)

Rewrite the expressions in Exercises 5–10 in terms of exponentials and simplify the results as much as you can.

9. (sinh(x)+cosh(x))⁴

Convert the angle $540°$ from degrees to radians.

Convert the angle $-\(\frac{5\pi}{6}\)$ from radians to degrees.

Given the right triangle below, evaluate $\(\tan\)\(\theta\)$.

Identify what angle, $\(\theta\)$ , satisfies the following conditions.

$\(\sin\)\(\theta\)=\(\frac\)12$; $\(\tan\)\(\theta\)$ < $0$

Identify what angle, $\(\theta\)$ , satisfies the following conditions.

$\(\cos\)\(\theta\)=\(\frac{\sqrt3}{2}\)$; $\(\sin\)\(\theta\)$ < $0$

Identify what angle, $\(\theta\)$ , satisfies the following conditions.

$\(\tan\)\(\theta\)=-1$; $\(\cos\)\(\theta\)$ > $0$