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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cos 70 i sin 70 cose i sine 7 Expanding as binomial ...View the full answer
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Related Book For
Cambridge International AS & A Level Further Mathematics Coursebook
ISBN: 9781108403375
1st Edition
Authors: Lee Mckelvey, Martin Crozier
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