Angular Position

4.1.1 Angular Position

7. Definition of Angular Position

Angular position is the angle made by the position vector of a rotating point with a selected fixed reference line.

It is represented by:

θ

For a point moving through arc length s on a circle of radius r:

θ = sr

This relation is valid when θ is measured in radians.

8. Angular Position in Easy Words

Angular position tells us how far an object has rotated from its selected starting line.

A point may have:

• A linear position along a path
• An angular position around an axis

The angular position depends on the selected reference direction.