Rotation Matrix
A stick figure meets the matrix [0 −1; 1 0] and ends up rotated 90° counterclockwise.
![A stick figure meets the matrix [0 −1; 1 0] and ends up rotated 90° counterclockwise.](../img/2016-01-01-rotation-matrix/1.jpg)
Use this cartoon
Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2016-01-01-rotation-matrix/ (CC BY-NC 4.0)Transcript
[Matrix [0 −1; 1 0] next to an upright figure] "Ooh! What's this?" = [the figure rotated 90° counterclockwise] "Ah, I see!"