# How do you find the exact values of sin^-1 0?

$\theta = 180 {n}^{\circ}$
We are looking for angle(s) whose sine is 0. So, that happens when $\theta = {0}^{\circ} , {180}^{\circ} , {360}^{\circ}$ and all its coterminals. So we can generalize it to $\theta = 180 {n}^{\circ}$