A unit of PlaneAngle.
One radian is equal to the angle subtended at the centre of a circle by an arc equal in length to the radius. The total plane angle about a point is 2π radian.
rad
A unit of PlaneAngle.
One radian is equal to the angle subtended at the centre of a circle by an arc equal in length to the radius. The total plane angle about a point is 2π radian.