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Complex Numbers Help

help cof.PNG

Any help with this question would be amazing.
Thanks in advance.
Reply 1
Avatar for S.G.
S.G.
22
Use http://www.examsolutions.net/maths-revision/syllabuses/OCR/period-1/FP3/module.php

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Reply 2
Avatar for TeeEm
TeeEm
19
@Zacken
Reply 3
Avatar for Zacken
Zacken
22
Original post by mathsgeek2
help cof.PNG

Any help with this question would be amazing.
Thanks in advance.


tan⁡θ=sin⁡θcos⁡θ\displaystyle \tan \theta = \frac{\sin \theta}{\cos \theta}, now simplify and get it in polar form, then apply DeMoivre.
Reply 4
Avatar for Zacken
Zacken
22
Original post by TeeEm


Ahoy, sir.
Reply 5
Avatar for mathsgeek2
mathsgeek2
OP
Original post by Zacken
tan⁡θ=sin⁡θcos⁡θ\displaystyle \tan \theta = \frac{\sin \theta}{\cos \theta}, now simplify and get it in polar form, then apply DeMoivre.


Thank you!

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