math.rad
Example
Convert various angles in degrees to their equivalent in radians.
print( "Degrees: 360, Radians: " .. math.rad( 360 ) ) -- 2*pi
print( "Degrees: 180, Radians: " .. math.rad( 180 ) ) -- pi
print( "Degrees: 90, Radians: " .. math.rad( 90 ) ) -- pi/2
print( "Degrees: 1, Radians: " .. math.rad( 1 ) ) -- pi/180
Output: Degrees: 360, Radians: 6.2831853071796
Degrees: 180, Radians: 3.1415926535898
Degrees: 90, Radians: 1.5707963267949
Degrees: 1, Radians: 0.017453292519943