જો $\tan \alpha$ અને $\tan \beta$ એ સમીકરણ $x^2 + px + q = 0$ $(p \ne 0)$ ના બીજ હોય,તો:

  • A
    $\sin^2(\alpha + \beta) + p\sin(\alpha + \beta)\cos(\alpha + \beta) + q\cos^2(\alpha + \beta) = q$
  • B
    $\tan(\alpha + \beta) = \frac{p}{q - 1}$
  • C
    $\sin(\alpha + \beta) = -p$
  • D
    $(a)$ અને $(b)$ બંને

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