Question

Name the SI units of solid angle and angle.
Q
in a Plane​

Answer 1

Answer:

The steradian (symbol: sr) or square radian is the SI unit of solid angle. It is used in three-dimensional geometry, and is analogous to the radian, which quantifies planar angles. ... The steradian, like the radian, is a dimensionless unit, the quotient of the area subtended and the square of its distance from the center.

Answer 2

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Steradian

The SI derived unit of angle is the steradian, which is defined as the solid angle for which the surface area equals the radius squared.