math
posted by s .
any good websites that explains everything about radians for gr12 math?

There is not a lot to explain.
1 radian = 180/pi degrees = 57.296 degrees
An angle measured in radians equals the ratio of the arc length of a sector of a circle subtended by that angle, divided by the radius of the circle.
For more about radians, see
http://en.wikipedia.org/wiki/Radian