Trigonometric Equations and Inequalities Practice Test

$\theta=\left\{\frac{\pi}{4},\frac{3\pi}{4}\right\}$

$\theta=\left\{-\frac{\pi}{4},-\frac{3\pi}{4}\right\}$

$\theta=\left\{\frac{3\pi}{4},\frac{5\pi}{4}\right\}$

$\theta=\left\{\frac{5\pi}{4},\frac{7\pi}{4}\right\}$