Rotation rules

Here are the rotation rules:

• 90° clockwise rotation: (x,y) becomes (y,-x)
• 90° counterclockwise rotation: (x,y) becomes (-y,x)
• 180° clockwise and counterclockwise rotation: (x, y) becomes (-x,-y)
• 270° clockwise rotation: (x,y) becomes (-y,x)
• 270° counterclockwise rotation: (x,y) becomes (y,-x)

1. What are the 3 types of rotation?

What are the 3 types of rotation?

These rotations are called precession, nutation, and intrinsic rotation.