Question

Define radian and steradian

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Answer 1

Answer:

Radian is the si unit of measuring of angle

and steradian is the si unit of measurimg solid angle

Answer 2

QUESTION

define radian and steradian

ANSWER

first of all there are two types of angles

А. Plane angle

В. Solid angle

Plane angle => ratio of length of arc to the radius

Here the unit of plane angle is Radian

=> Radian denoted by or the symbol is rad

Solid angle

=> can be defined as the ratio of the intercepted area of the spherical surface, to its square of its radius

Here unit of plane angle is Steradian

=> steradian denoted by or the symbol is Sr