A radian is 180/pi degrees, or about 57 degrees
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180
It is the derived unit of plane angle and 1 radian = one full rotation/2π. Also, it is equal to 57.296°.
The radian is 0.523598776
1 degree = pi*radian/180 So therefore 15 times pi*radian/180 = pi*radian/12
A radian is an arc of the circumference of a circle and it is about 57.3 degrees.