Quadratic EquationHard

Question

If tan α and tan β are roots of the equation x2 + px + q = 0 with p ≠ 0, then -

Options

A.sin2 (α + β) + p sin (α + β) cos (α + β) + q cos2 (α + β) = q
B.tan (α + β) =
C.cos (α + β) = − p
D.sin (α + β) = 1 − q

Solution

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