Question

Expresse:
A)30° B)10° 20°  C)2°

Answer 1

$A) \ 30^o=\frac{\pi}{6} \ rad\\ \\ B) \ 10^o=\frac{\pi}{18} \ rad\\ \\ C) \ 20^o=\frac{\pi}{9} \ rad\\ \\ D) \ 2^o=\frac{\pi}{90} \ rad$