## Trigonometry (10th Edition)

$\theta=170.5483647^{\circ}$
1. Use calculator to find theta $\sin\theta=0.164215$ $\theta=9.451635268^{\circ}$ 2. To find required angle in the second quadrant just subtact this angle to 180 degrees $\theta=(180-9.451635268)^{\circ}=170.5483647^{\circ}$