radianToDegree
Converts an angle from radians to degrees using a pre-calculated conversion factor.
The input radian value must be a finite floating-point number. The conversion factor RAD_TO_DEG_FACTOR is (180.0 / PI) cast to a Float.
Return
The angle converted to degrees, as a Float.
Parameters
radian
The angle in radians. Must be a finite number.
Throws
IllegalArgumentException
If radian is not a finite number (that is, NaN or Infinity).