Using de Moivre's theorem, or otherwise, find cos 7 in terms of cos .

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Using de Moivre's theorem, or otherwise, find cos 7θ in terms of cos θ.

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Cambridge International AS & A Level Further Mathematics Coursebook

ISBN: 9781108403375

1st Edition

Authors: Lee Mckelvey, Martin Crozier

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Question Posted: Oct 15, 2021 01:00 AM

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Using de Moivre's theorem, or otherwise, find cos 7 in terms of cos .

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cos 70 i sin 70 cose i sine 7 Expanding as binomial ...View the full answer

Cambridge International AS & A Level Further Mathematics Coursebook

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