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If α + β = π/2 and β + γ = α, then tanα is equal to

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If α + β = π/2 and β + γ = α, then tanα is equal to

(a) 2(tanβ + tanγ)

(b) tanβ + tanγ

(c) tanβ + 2tanγ

(d) 2tanβ + tanγ

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Correct option is (c) tanβ + 2tanγ

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