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CBSE Class 10 Answered

20. Prove the identity:
Asked by | 15 Feb, 2009, 12:41: PM
Expert Answer

The R.H.S. if simplified becomes  equal to      secA + tan A.

This is the hint to us that we must convert the LHS also to secA and tanA .

So  this is how we'll do it.

Divide the LHS numerator and denominator by cos A

So,

 LHS

=

=RHS

Answered by | 16 Feb, 2009, 11:17: AM
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