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CaptainBizarre
@CaptainBizarre
July 2022
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cos^2 x=cos2x
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kmike21
Verified answer
Cos²x=cos2x
cos²x=cos²x-sin²x
-sin²x=0
sin x=0
x= +-πn, где n=0,1,2....
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Answers & Comments
Verified answer
Cos²x=cos2xcos²x=cos²x-sin²x
-sin²x=0
sin x=0
x= +-πn, где n=0,1,2....