### Home > CCA2 > Chapter 9 > Lesson 9.1.2 > Problem9-28

9-28.

Convert the following angle measurements from degrees to radians.

1. $30^\circ$

This is a special angle. It is one that is worth memorizing!

$\frac{\pi}{6}$

1. $15^\circ$

Half of part (a).

1. $-75^\circ$

Negative $(30^\circ + 30^\circ + 15^\circ)$

1. $630^\circ$

$360^\circ + 270^\circ$