Q.
If sin(θ+α)=cos(θ+α) then tanθ=
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a
1+tanα1−tanα
b
1+sinα1−sinα
c
1−tanα1+tanα
d
1+cosα1−cosα
answer is C.
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Detailed Solution
sinθ+αcosθ+α=1⇒ tan(θ+α)=1⇒tanα+tanα=1−tanθtanα⇒tanθ(1+tanα)=1−tanα⇒tanθ=1−tanα1+tanα
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