given that cot teta=7/8 then evaluate (1+sin teta) (1-sin teta) /(1+cos teta) (1-cos teta) .
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Step-by-step explanation:
given cot theta=7/8
(1+sin theta)(1-sin theta)/(1+cos theta)(1-costheta)
=1-sin²theta/1-cos²theta
=cos²theta/sin²theta
=cot²theta
=49/64
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