Trigonometry Help!!!!?

Here's the thing. Since you know that pi radians = 180 degrees (it does, by the way, that's the definition), pi radians / 180 degrees = 1, and 180 degrees / pi radians = 1. To convert, put the measurement you want to get rid of on the bottom. So if you star with radians, multiply by 180 / pi, and if you start with degrees, by pi / 180.