Question

what is radian and define ​

Answer 1

Answer:

a unit of measurement of angles equal to about 57.3°, equivalent to the angle subtended at the centre of a circle by an arc equal in length to the radius.

Explanation:

Definition. Radian describes the plane angle subtended by a circular arc as the length of the arc divided by the radius of the arc. One radian is the angle subtended at the center of a circle by an arc that is equal in length to the radius of the circle.

Answer 2

Answer:

radian is the measure of angle defined as

1 radian=360/pie