a. Show that cos 3 x 4 cos 3 x 3cos x. b. Hence show
Question:
a. Show that cos 3x Ξ 4 cos3 x − 3cos x.
b. Hence show that
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" π (4cos x + 2 cos.x) dx 17 6
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a We can use the identity cos 3x 4 cos3 x 3 cos x to prove that cos3 x 4 cos3 x 3 cos x cos 3x cos 2...View the full answer
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Related Book For
Cambridge International AS & A Level Mathematics Pure Mathematics 2 & 3 Coursebook
ISBN: 9781108407199
1st Edition
Authors: Sue Pemberton, Julianne Hughes, Julian Gilbey
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