2D Rotation Matrix Apply

Problem

Rotate a 2D vector v counterclockwise by theta degrees about the origin.

Use x' = x*cos(t) - y*sin(t) and y' = x*sin(t) + y*cos(t), with t = radians(theta).

Hint

Remember to convert degrees to radians before calling sin/cos.

case 1

in: [[1,0],90]

expected: [0,1]

case 2

in: [[1,0],180]

expected: [-1,0]

case 3

in: [[2,3],0]

expected: [2,3]

case 4

in: [[1,1],45]

expected: [0,1.414213562373095]

Starter codePython

def rotate_2d(v, theta_degrees):
    # Your code here
    pass

4 test cases · run your code against them in the editor