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Which of the following is not an identity?

Which of the following is not an identity?-example-1
User Pramoth
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1 Answer

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D.


(1+cos^2x)/(sin^2x)=1

1+cos^2x=sin^2x}

1=sin^2x-cos^2x}
its contradictive with identity

1=sin^2x+cos^2x}
User Yusufaytas
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