જો $\alpha$ અને $\beta$ એ $\sin^2 x + a \sin x + b = 0$ તેમજ $\cos^2 x + c \cos x + d = 0$ ના ઉકેલો હોય,તો $\sin(\alpha + \beta)$ ની કિંમત કેટલી થાય?

  • A
    $\frac{2bd}{b^2 + d^2}$
  • B
    $\frac{a^2 + c^2}{2ac}$
  • C
    $\frac{b^2 + d^2}{2bd}$
  • D
    $\frac{2ac}{a^2 + c^2}$

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