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Question

The most general value of θ satisfying tanθ+tan(3π4+θ)=2 are

A
nπ±π3,nϵZ
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B
2nπ+π3,nϵZ
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C
2nπ±π3,nϵZ
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D
nπ+(1)nπ3,nϵZ
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Solution

The correct option is A nπ±π3,nϵZ

Simplifying it,
tanθ+tanθ1tanθ+1=2

tanθ(1+tanθ)+tanθ1=2(1+tanθ)

tan2θ=3

tanθ=3=tanπ3

So,
θ=nπ±π3


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