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B
tanα2+β2+β2=tanγ2tanγ2tanα2=1
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C
tanα2+β2+γ2=−tanα2tanβ2tanγ2
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D
tanα2+β2+β2=tanγ2tanγ2tanα2=0
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Solution
The correct option is Btanα2+β2+γ2=tanα2tanβ2tanγ2 α+β+γ=2π⇒(α+β+γ2)=π ⇒α2+β2=π−γ2⇒tan(α2+β2)=tan(π−γ2) ⇒tanα2+tanβ21−tanα2tanβ2=−tanγ2 ⇒tanα2+tanβ2=−tanγ2+tanα2tanβ2tanγ2 ⇒tanα2+tanβ2+tanγ2=tanα2tanβ2tanγ2