Question

Can someone please help me with this question? I have a test tomorrow, and I am so confused!
I've attached the question! I need help with number 9!

Answer 1

i need help with number 9, please help!

Answer 2

http://www.youtube.com/watch?v=6z6fzPXUbSQ

Answer 3

polar coordinates: (√3,1) and (1,√3)
you have to multiply (√3,1) x (1,√3) and you have (√3,√3)<--=z1z2
then (divide √3 by √3 and you get [1] and 1/√3 you get [√3])=[1,√3]
so the product of z1z2 and z1/z2, 1/z1 is
(√3,√3) + [1,√3]= answer