Question

What are the units of Plane angle and Solid angle?​

Answer 1

Answer:

The dimensionless unit of plane angle is the radian, with 2π radians in a full circle. A solid angle, ω, made up of all the lines from a closed curve meeting at a vertex, is defined by the surface area of a sphere subtended by the lines and by the radius of that sphere, as shown below

Explanation:

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Answer 2

Answer:

Explanation:

Plane Angle is the angle between two intersecting straight lines measured in the plane of the same lines. It is a dimensionless physical quantity measured in either Degree or Radian. Solid Angle is a three dimensional angle subtended by any object at a certain point in 3D space.

The dimensionless unit of plane angle is the radian, with 2π radians in a full circle.

The SI unit of solid angle is the steradian (sr).