Q10 of 29 Page 8

Prove the following identities

[CBSE 2001]

Taking LHS

[multiplying and divide by conjugate of 1– sinθ in 1st term and 1+sinθ in 2nd term]





[∵ cos2 θ + sin2 θ = 1]


=




= 2 sec θ


=RHS


Hence Proved

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[CBSE 2001]

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