90 Degree Clockwise Rotation Transformation Matrix

This video explains what the transformation matrix is to rotate 90 degrees clockwise (or 270 degrees anticlockwise) about the origin.

Rotation matrix - Wikipedia

Rotation matrix - Wikipedia

Rotation matrix for rotations around z-axis - MATLAB rotz

AQA Level 2 Further Maths

rotate the triangle 90 degree Counterclockwise around the origin. Find the coordinates of point C in the

linear algebra - Understanding rotation matrices - Mathematics Stack Exchange

Rotation matrix - Wikipedia

Rotation in Math, Definition, Rules & Examples - Lesson

Learn rotations to do them clockwise

Rotation in R3 around the x-axis (video)

Geometry

cdn.kastatic.org/images/avatars/svg/robot_female_2

Geometry Rotations Clockwise and Counterclockwise Explained! — Mashup Math