Without pi, you can never represent the conversion exactly.
If you use 57.296, that gets you within 0.001% of the truth,
which is usually acceptable.
If you use 57.3 instead, you're off by about 0.007% ... also not too shabby.
Radians = approximately (degrees / 57.296)
Degrees = approximately (radians x 57.296)
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Multiply degrees by (pi/180) to get radians. Multiply radians by (180/pi) to get degrees.
pi radians = 180 degrees so 1.05 radians = 1.05*180/pi = 60.16 degrees (approx).
To go from radians to degrees, multiply by 180/pi To go from degrees to radians, multiply by pi/180
83 deg = 83*pi/180 = 0.4611... * pi radians or 1.4486 radians.
180 degrees = 1 pi radian. That means that there are 2 pi radians in a circle. Divide the number of degrees by 180 and you get the pi radians. You can also multiply the pi radians by 180 and get the number of degrees.