Function rotation

rotation<T>(angleInRadians, dst?): T
Creates a 3-by-3 matrix which rotates by the given angle.
Type Parameters
- T extends BaseArgType = number[]
Parameters
- angleInRadians: number
  The angle by which to rotate (in radians).
- Optional dst: T
  matrix to hold result. If not passed a new one is created.
Returns T
The rotation matrix.