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" TEXUT "6.sqrt(7.82)" Keja "widehat sig...

" TEXUT "6.sqrt(7.82)" Keja "widehat sigma:.(cot A-cos A)/(cot A+cos A)=(cosec A-1)/(cosec A+1)

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Prove that , (Cot A-cos A)/(cot A+cos A)=(cosec A-1)/(cosec A+1)

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