The last type of transformation we are working with in this class is rotation.
In this class we only deal with rotations around the origin (0, 0). We also assume that rotations are clockwise unless it says otherwise.
When rotating counterclockwise we subtract the angle from 360 and use the corresponding clockwise formula.
For example: If you want to rotate (3, 2) counterclockwise 90 degrees…
1. 360 – 90 = 270 so we will perform a clockwise 270 degree rotation
2. Use the rotation chart (3, 2) becomes (2, -3)
Classwork and Homework: