Show that (cos x sin x) + (cos x + sin x) = 2.
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Show that (cos x − sin x)² + (cos x + sin x)² = 2.
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ANSWER To prove that cos x sin x cos x sin x 2 we can expand both squares a...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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