Q. 14 H4.3( 3 Votes )

Prove the following identities :

(1+ tan2 θ) cos θ. sin θ = tan θ

Answer :

Taking LHS = (1+ tan2 θ) cos θ sin θ

= (sec2 θ) cos θ sin θ [ 1+ tan2 θ = sec2 θ]




= tan θ


=RHS


Hence Proved


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