7. Express – InterviewSolution

1.

7. Express

Answer»

Firstly consider L.H.S ; NOW rationalise

√ 1 +SinA √ 1+ SinA--------------- x ----------------√ 1- SinA √1 + SinA

√ ( 1+ SinA)² 1+ SinA------------------ = --------------√ 1² - Sin²A Cos² A

Now consider RHS

= Sec A + Tan A

=1/ Cos A + SinA / CosA

=1 + SinA / CosA

Hence proved ....

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