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  1. The value of (1 + tan2θ) (1 – sin2θ)
    1. 2
    2. 1
    3. –1
    4. –2
Correct Option: B

Expression
= (1 + tan2θ) .(1 – sin2θ)
= sec2θ . cos2θ = 1
[∵  sec2θ – tan2θ = 1 = sin2θ + cos2θ ; secθ . cosθ = 1]


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