Mangur Muhammad Posted June 6, 2015 Report Share Posted June 6, 2015 (edited) hi guysPlease help who can solve it for me ? Edited June 6, 2015 by Mangur Muhammad Reply Link to post Share on other sites More sharing options...
thirdcultureteenSH->UK Posted June 7, 2015 Report Share Posted June 7, 2015 http://en.wikipedia.org/wiki/De_Moivre%27s_formula Reply Link to post Share on other sites More sharing options...
Vioh Posted June 8, 2015 Report Share Posted June 8, 2015 hi guysPlease help who can solve it for me ? Below are my solutions. I didn't solve the first 2 problems using De Moivre's theorem, simply because I think it's way easier to solve them with mathematical induction. I have also used lots and lots of trigonometric identities, which I've made implicit in my worked solutions. All of these identities, which I listed below, are part of the IB syllabus, and any HL student should be comfortable using them: Feel free to ask if you have any further questions. 1 Reply Link to post Share on other sites More sharing options...
Mangur Muhammad Posted June 10, 2015 Author Report Share Posted June 10, 2015 THANK YOU BROTHER Reply Link to post Share on other sites More sharing options...
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