What is radian?

Q.  At the centre, the plane angle subtended by an arc of a circle equal to the radius of the circle is known as
- Published on 05 Nov 15

a. Steradian
b. Candela
c. Lumen
d. Radian

ANSWER: Radian

Post your comment / Share knowledge

Enter the code shown above:
(Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)