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OpenStudy (anonymous):
Rewrite with only sin x and cos x. sin 2x - cos 2x
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OpenStudy (anonymous):
sin2x=2sinx*cox cos2x=cosx*cox-sinx*sinx also use identity...: 2 cos^2(x) - 1 = 1 - 2 sin^2(x) you should be abe to get it
OpenStudy (anonymous):
I don'y know how to answer it
OpenStudy (anonymous):
would you like me to give you the answer?
OpenStudy (anonymous):
@Rezz5 yes
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