math.cos()

Returns the cosine of the angle.

math.cos(n)

The math.cos() function returns a numeric value between -1 and 1, which represents the cosine of the value n.

Use math.cos() to return the cosine of a 90 degree angle:

import math

print(math.cos(90))

# Output: -0.4480736161291702

Use math.cos() to return the cosine of a 180.5 degree angle:

import math

print(math.cos(180.5))

# Output: -0.141105086702016