Radian

Radian definition

The radian, denoted by the symbol rad, is the unit of angle in the International System of Units (SI) and is the standard unit of angular measure used in many areas of mathematics. It is defined such that one radian is the angle subtended at the centre of a circle by an arc that is equal in length to the radius. The unit was formerly an SI supplementary unit and is currently a dimensionless SI derived unit, defined in the SI as 1 rad = 1 and expressed in terms of the SI base unit metre (m) as rad = m/m. Angles without explicitly specified units are generally assumed to be measured in radians, especially in mathematical writing.

gallery: Visual explanation
Usage

For example, radians are heavily used in Riglab application for rig desing. During programming the core we have been using radians in calculations for such operations like gear connections, rotation of single and group items.

video: What are Radians? | Radian (Unit of Plane Angle) | Infinity Learn
YouTube channel:What are Radians? | Radian (Unit of Plane Angle) | Infinity Learn
quiz: Angle subtended at the centre of a circle by an arc that is equal in length to the radius is called ...
Partial
Vector
Deflection
Radian
Sources 

Wikipedia

For video sources please check the information under the video.
You are here in Content