plz answer this question no scam in their
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tan^2theta/(sectheta-1)^2
=(sec^2theta-1) / (sectheta-1)^2
=(sectheta-1) (sectheta+1) / (sectheta-1)^2
=(sectheta+1) / (sectheta-1)
=((1/costheta)+1) / ((1/costheta)-1)
=((1+costheta)/costheta) / ((1-costheta)/costheta)
= (1+costheta) / (1-costheta)
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