Answer
(a) $-300^o$
(b) $200 ^o$
(c) $-286 ^o$
(d) $660 ^o$
Work Step by Step
To convert radians to degrees, multiply by $\frac{180}{\pi}$
(a) $$-\frac{5\pi}{3} \times \frac{180}{\pi} = -300^o$$
(b) $$\frac{10\pi}{9} \times \frac{180}{\pi} = 200^o$$
(c) $$-5 \times \frac{180}{\pi} = \frac{-900^o}{\pi} \approx -286^o$$
(d) $$\frac{11 \pi}{3} \times \frac{180}{\pi} = 660^o$$
