यदि $\sin^4 \alpha + 4 \cos^4 \beta + 2 = 4\sqrt{2} \sin \alpha \cos \beta$ और $\alpha, \beta \in [0, \pi]$ है,तो $\cos(\alpha + \beta)$ का मान ज्ञात कीजिए।

  • A
    $0$
  • B
    $-1$
  • C
    $\sqrt{2}$
  • D
    $-\sqrt{2}$

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