What is cos5x = 0 between interval 0

Given that cos5x = 0.

We know
from trigonometric identities that cos(x) = 0 when x= 30, 150, 210, and
330.

==> cos5x = 0 when (5x)= 30, 150, 210, and
330

To find the value of x, we will divide by
5.

==> x = 30/5 , 150/5, 210/5, and
330/5

==> x = 6, 30, 42, and 66
degrees.