Practicing Success
What is the value of $\sqrt{\frac{cosec A+1}{cosecA-1}}+\sqrt{\frac{cosecA-1}{cosecA +1}}$ |
2 cos A sec A cos A 2 sec A |
2 sec A |
$\sqrt{\frac{cosec A+1}{cosecA-1}}+\sqrt{\frac{cosecA-1}{cosecA +1}}$ = \(\frac{√(cosecA + 1 )² + √(cosecA - 1 )² }{ √( cosecA - 1 ) . √( cosecA + 1 ) }\) = \(\frac{(cosecA + 1 ) + (cosecA - 1 ) }{ √(cosec²A - 1) }\) { using, cosec²A - cot²A = 1 } = \(\frac{2cosecA ) }{ √cot²A }\) = \(\frac{2cosecA ) }{ cotA }\) = 2 secA |