Q. 2 D5.0( 1 Vote )

Prove the followi

Answer :

Consider LHS,


LHS =


Multiplying and dividing with (secθ + tanθ),


= ×


We know that (a + b) (a – b) = a2 – b2.


=


We know that sec2θ - tan2θ = 1.


=


We know that = secθ and = tanθ.


= cosθ() + cosθ ()


= 1 + sinθ = RHS


Hence proved.


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