A unit of angular measure equal to the angle subtended at the center of a circle by an arc equal in length to the radius of the circle, approximately 57°17'44.6"
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A radian is a unit for measuring angles. Tau radians (2*pi radians) equal a whole turn.
One radian is equal to roughly 57 degrees!
Degree measure is based off of a division of 360 degrees in a circle. Radian measure is based off of a division of 2PI in a full circle.
2.094
160 degrees = 2.8 radians.
240 degrees is about 4.188 radians.