The or gradient is equal to the of the angle, or sometimes rarely the ; a gradient is often expressed as a percentage.
In other contexts, such as identifying a point on a curve or describing the cumulative rotation of an object in two dimensions relative to a reference orientation, angles that differ by a non-zero multiple of a full turn are not equivalent.
Angles measured in , are shown with the symbol °.
Like wise what is the conjugate variable for angular momentum? Advanced Euclidean Geometry, Dover Publications, 2007.
The exterior angle here could be called a supplementary exterior angle.
By convention, viewed from above, bearing angles are positive clockwise, so a bearing of 45° corresponds to a north-east orientation.