## Trigonometry (11th Edition) Clone

$30^{\circ}$ and $150^{\circ}$
1. Since $sin$ $\theta$ is positive, $\theta$ must be in quadrant I or II. 2.. The reference angle is $30^{\circ}$, so the other angle must be $180^{\circ} - 30^{\circ} = 150^{\circ}$.