Answer
(a) $30°=\frac{\pi}{6}rad$
(b) $45°=\frac{\pi}{4}rad$
Work Step by Step
$\pi~rad=180°$
$\frac{\pi~rad}{180°}=1$
(a) $30°=30°(\frac{\pi~rad}{180°})=\frac{30°(\pi~rad)}{180°}=\frac{\pi}{6}rad$
(b) $45°=45°(\frac{\pi~rad}{180°})=\frac{45°(\pi~rad)}{180°}=\frac{\pi}{4}rad$
