radian
the ratio of the intercepted arc to the radius. One radian equals 57.1 degrees.To convert radians to degrees: multiply the radian angle by 180/pian angle can be measured in degrees or RADIANS.
Radian is a unit of measurement for angles, used primarily in mathematics and physics. It is defined as the angle subtended at the center of a circle by an arc of the circle that is equal in length to the radius of the circle. It is denoted by the symbol rad.
One radian is approximately equal to 57.3 degrees. The use of radians in math and physics has several advantages over degrees, including simplification of many trigonometric formulas and allowing for easier calculation of derivatives and integrals.
To convert from degrees to radians, multiply the degree measurement by pi/180. To convert from radians to degrees, multiply the radian measurement by 180/pi.
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