Random numbers- only length-1 arrays can be converted to Python scalars

from math import sin, cos, pi
import numpy as np
N=10

a=np.random.randint(0, 360+1, N)
print (a)

theta=a*pi/180
print(theta)

x=[cos(theta)]
print(x)
y=[sin(theta)]
print(y)

---

TypeError                                 Traceback (most recent call last)
<ipython-input-47-632b45c2aba1> in <module>()
      9 theta=a*pi/180
     10 print(theta)
---> 11 x=[cos(theta)]
     12 print(x)
     13 y=[sin(theta)]

TypeError: only length-1 arrays can be converted to Python scalars