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The correct option is A A. P tanβ = 2 sinα sin r/sin (α +g) #160; [Given] tanβ = 2 sin α sin r/sin α cos r+ cos α sin r tan β = 2/sinα cos ...

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Sin(A+B)Sin(A-B)

If tan β =2s...

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If tan $β = \frac{2 sin α sin γ}{sin (α + γ)},$ then $cot α, cot β, cot γ$ are in:

A . P

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G . P

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H . P

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