3 years ago

Rewrite with only sin x and cos x. sin 2x - cos 2x

Mathematics

2 answers:

Ymorist [56]3 years ago

4 0

Sin2x = 2sinxcosx
cos2x = (cosx)^2 - (sinx)^2 = 2(cosx)^2 -1 = 1- 2(sinx)^2

Any combination you want is here.

RoseWind [281]3 years ago

3 0

Sin2x-cos2x
2sinxcosx-2cos^2x-1
2cos^2x+2sinxcosx-1
I think that's how you do this one.

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