Question

cosec A/ (cosec A- 1) + cosec A /( cosec A+ 1) =2 sec2 A​

Answer 1

ANSWER:--------

LHS {= cosecA} (cosecA+1)+cosecA(cosecA-1)  /  cosec^2A -1

        {=  cosec} (cosecA+1+cosecA-1)  / cot^2A

        {= 2cosec^2A  / cot^2}

        {= 2 / sin^2A / cos^2A / sin^2A}

        {= 2 / cos^2}

       { = 2sec^2A}

RHS = 2sec^2A

hence, {LHS=RHS }

HOPE IT HELPS:-------

pls mark as brain list

T!—!ANKS!!!

Answer 2

HOPE THIS HELPS YOU ..