Question

I really need a step by step to work this out please?

Answer 1

I can substitute z for e^itheta
to get a fraction
then i rationalise it and get
(2iSinTheta)/(2-2(costheta))
stuck here

Answer 2

lemme know if you understand

Answer 3

I don't understand where the halves came from @stgreen

Answer 4

I understand the rest though

Answer 5

half and half make one..so you can take it out

Answer 6

thank you that is perfect, me and my teacher tried to do this for 1 hour and failed lol