The radian system describes angles in terms of the diameter of a unit circle, i.e. where the radius is 1. If two lines intersect at the radius of a unit circle, the angle in radians between those two lines is the length of the arc along the diameter of the circle delimited by those two lines. The diameter of a unit circle is 2 pi. In the degree system, the angle of one quarter of the circle is 90, while the radians of that same angle is pi / 2. One radian is approximately 57.3 degrees.
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One radian is about 57.3 degrees
1 radian = 360/tau (or 180/pi) degrees.
Meter is a unit of length. Radian is a unit of angle. They don't relate.
One radian = 180/pi or about 57.3 degrees (pi = about 3.14).
One radian is equal to roughly 57 degrees!