I have a array of values in a numpy array such that np_x = np.array(x)

I WANT to create a different array of values such that f(x) = cot(-pi*x) However keep getting the error of "TypeError: only length-1 arrays can be converted to Python scalars"

Here is my work so far please help USING PYTHON

import numpy as np

import math

n = 1000 x = np.random.uniform(0, 1, n)

np_x = np.array(x) c = math.atan(-math.pi*x)