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Rewrite with only sin x and cos x. Sin2x-cos2x
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Rewrite with only sin x and cos x. Sin2x-cos2x

User Genise
by
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1 Answer

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From trig identities, we know that sin2x = 2sinxcosx and cos2x =
cos^(2) x - sin^(2) x

So sin2x-cos2x = 2sinxcosx - (
cos^(2) x - sin^(2) x) in terms of sinx and cosx
User Artist
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