(Easy 10 points) Convert complex numbers to polar form? (5-5isqr3)

Again, that is

(5 - 5 i sqr3)
(Note: The 5, the i, and the square root of 3 is all combined)

Please show any work. 10 points to best answer. Thanks!

5-5√3i is in the form of x+iy, where x = 5 and y = -5√3

To convert to polar form of ( r , theta)
r = √(x^2+y^2)
tan theta = y/x

So r = √(25+25/3) = √100/3 = 10/√3
tan theta = -√3
So theta = -TT/3 = 2TT - TT/3 = 5TT/3

So polar form is (10/√3 , 5TT/3)