Cos 4x=1-8 sin square x cos square x
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Answer:
Ex 3.3, 24 Prove that cos 4x = 1 – 8sin2 x cos2 x Taking L.H.S. cos 4x = 2 (cos 2x)2 – 1 = 2 ( 2 cos2 x – 1)2 -1 Using
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Step-by-step explanation:
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