[ashesh1013]

If z= (3^(1/2)+i))/2), then z^69 is equal to?
a)1 b) -1 c)i d) -i
Please help!
thnx

[notnek]

First write in exponential form.

Post your working if you need more help.

[aznkid66]

(Original post by notnek)
First write in exponential form.

Post your working if you need more help.

Alternatively, write it in (a)cis(theta) form and use DeMoivre's rule for powers of (a)cis(theta).
This is for if your teacher has gone over cis(theta) but not e^i(theta).