From what I understood in the voice thread:

Radians

-       There are 2Pi radians in a circle, which is 360"o".

-       A Radian is about 1/6 of a circle

-       The radian depends on how many turns of the circle (1/2 turn = 180"o" = 1Pi)

-       To convert radians to degrees and vise versa is really just cross multiplication.

Well that’s pretty much what I got. I hope that’s helpful…