Question

what is radian? how to calculate radian to degree? give an example also.

Answer 1

To convert into degrees

1 RADIAN =180°

PIE

EG:

Answer 2

radian is defined as plane angle ... means on pàpér only .... subtended at center of a circle by an arc equal in length to the radius of circle..

θ = arc = l

radius r

Multiply the radians by 180/π to convert to degrees..

eg: π/12 radians

= π/12 × 180/π

= 180π/12π

= 15°