In the radians method of angular measurement, to complete a circle is 2 times pi (2 * 3.1415)
This means that 1 degree is 2 * pi / 360
and 1 Radian is 360 / (2 * pi)
To convert radians into degrees you should multiply by 180/pi.
To convert degrees into radians you should multiply by pi/180.
Chip H.
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