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If sin x + sin 2 x u003d 1 prove that cos2 x cos4 x u003d 1
If sin x + sin 2 x u003d 1 prove that cos2 x cos4 x u003d 1 pictures 5
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If sin x + sin 2 x u003d 1 prove that cos2 x cos4
If sin x + sin 2 x u003d 1 prove that cos2 x cos4 x u003d 1
