Prove that : (sectheta+tantheta-1)/(tant...

Prove that : `(sectheta+tantheta-1)/(tantheta-sectheta+1)=(costheta)/(1-sintheta)`

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prove (tantheta +sectheta-1)/(tantheta-sectheta+1) = (1+sintheta)/(costheta)

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Prove that : (tan theta)/(sectheta+1)-(tantheta)/(1-sectheta)=2cosec theta

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Prove that (costheta)/(sectheta-tantheta)=1+sintheta .

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