Contents

UnitAngle

A unit of measure for planar angle and rotation.

Declaration

class UnitAngle

Overview

You typically use instances of UnitAngle to represent specific quantities of planar angle using the NSMeasurement class.

Angle

Angle is a quantity of rotation. The SI unit for angle is the radian (rad), which is dimensionless and defined to be 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).

The UnitAngle class defines its baseUnit() as degrees, and provides the following units, which are initialized using UnitConverterLinear converters with the specified coefficients:

Name

Method

Symbol

Definition

Degrees

Degrees

°

1.0

Arc Minutes

Arcminutes

ʹ

0.016667

Arc Seconds

Arcseconds

ʺ

0.00027778

Radians

Radians

rad

57.2958

Gradians

Gradians

grad

0.9

Revolutions

Revolutions

rev

360

Topics

Accessing the Base Unit

Accessing Predefined Units

See Also

Physical Dimension