Express 4 cosx sinx in terms of cos x.
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Express 4 cos²x − sin²x in terms of cos x.
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We can use the identity cosx sinx 1 to express ...View the full answer
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Related Book For
Complete Pure Mathematics 1 For Cambridge International AS & A Level
ISBN: 9780198427438
2nd Edition
Authors: Jean Linsky, Brian Western, James Nicholson
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