In the better-known degrees, a full circle is divided into 360 degrees. Radian is another angular measurement, where a full circle is dividied into (2 x pi) units called radians. In other words, the arc along a circle of radius 1. The radian is the "natural" unit of angular measurements; several calculations are simpler when angles are in radians, especially in advanced math topics.
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One radian is about 57.3 degrees
1 radian = 360/tau (or 180/pi) degrees.
One radian = 180/pi or about 57.3 degrees (pi = about 3.14).
Meter is a unit of length. Radian is a unit of angle. They don't relate.
One radian is equal to roughly 57 degrees!