Question

Define one radian... ​

Answer 1

Answer:

• an SI unit of plane angle; the angle between two radii of a circle that cut off on the circumference an arc equal in length to the radius. 1 radian is equivalent to 57.296 degrees and π/2 radians equals a right angleSymbol: rad.

Answer 2

A radian is defined as the angle between 2 radii (radiuses) of a circle where the arc between them has length of one radius. Another way of putting it is: "a radian is the angle subtended by an arc of length r (the radius)". ... One radian is about.