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De Moivre's Theorem for Trig Identities

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Uploaded by on Jul 7, 2009

http://demonstrations.wolfram.com/DeMoivresTheoremForTrigIdentities/

The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.

De Moivre's theorem, along with the binomial theorem, can be used to expand functions like cos(n x) or sin(n x), where n is an integer, into a sum of powers of trig functions consisting of a mixture of sines and cosines. In some cases it is possible to ...

Contributed by: Michael Croucher

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  • @MrPiPPo lololol i know eh? 12 solid seconds of pure math!

  • omg, this video helped so much thank you.

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