Tan²theta *cos²theta = 1- cos²theta

1.	Tan²theta *cos²theta = 1- cos²theta
Answer» tan^2theta = sin^2theta/cos^2thetaThis implies tan^2theta × cose^2theta = sin^2theta& 1 - cos^2 theta also = sin^2thetaLHS = RHS , Hence Proved

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