Answer
(a) $\frac{3\pi}{2}rad=270°$
(b) $\frac{7\pi}{6}rad=210°$
Work Step by Step
$180°=\pi~rad$
$\frac{180°}{\pi~rad}=1$
(a) $\frac{3\pi}{2}rad=\frac{3\pi}{2}rad.\frac{180°}{\pi~rad}=\frac{3(2)(90°)}{2}=270°$
(b) $\frac{7\pi}{6}rad=\frac{7\pi}{6}rad.\frac{180°}{\pi~rad}=\frac{7(6)(30°)}{6}=210°$