5. Prove cos 2x 1-sin 2x cos.x+sin x cos x −sin x

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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5. Prove
cos2x
1–sin2x
cos.x+sin x
cosx−sinx
Transcribed Image Text:5. Prove cos2x 1–sin2x cos.x+sin x cosx−sinx
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