Math, asked by Aayushi0495, 1 year ago

Proove it... Sin40..........

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Answered by Anonymous

1

(sin^2theta -cos^2theta)(sin^2thetha+ cos^2theta)=sin^2thetha-cos^2theta
rhs=1 - cos^2theta -cos^2theta=sin^2thetha-cos^2thetha
hence proved

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