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

9-28.
1. Convert the following angle measurements from degrees to radians. Homework Help ✎

1. 30°

2. 15°

3. −75°

4. 630°

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

$\frac{\pi}{6}$

Half of part (a).

Negative (30° + 30° + 15°)

360° + 270°