A unit of measure for rotation.
- iOS 10.0+
- macOS 10.12+
- Mac Catalyst 13.0+
- tvOS 10.0+
- watchOS 3.0+
You typically use instances of
NSUnit to represent specific quantities of planar angle using the
Angle is a quantity of rotation. The SI unit for angle is the radian (rad), which is dimensionless and defined to be the the angle subtended by an arc that is equal in length to the radius of a circle. Angle is also commonly expressed in terms of degrees (°) and revolutions (rev).