Angle Between Vectors

Problem

Return the angle between vectors a and b in degrees, using

theta = acos((a . b) / (||a||_2 * ||b||_2))

Clamp the cosine to [-1, 1] to avoid floating-point domain errors, and return 0.0 if either vector is zero.

Hint

Convert radians to degrees with math.degrees.

case 1

in: [[1,0],[0,1]]

expected: 90

case 2

in: [[1,0],[1,0]]

expected: 0

case 3

in: [[1,0],[-1,0]]

expected: 180

case 4

in: [[1,1],[1,0]]

expected: 45

Starter codePython

def angle_between(a, b):
    # Your code here
    pass

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