Posted by Convert angle in degrees to radiansConvert radians on Sunday, December 9, 2012 at 12:06am.
Since 360 degrees = 2 pi radians BY DEFINITION, 90 degrees must be pi/2 radians.It is 1/4 of a complete circle.
All of your questions are worked the same way.
pi/30 radians = [pi/30]* [360 deg/(2 pi rad)]
= 6 degrees
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