Quadratic EquationMedium
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
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