यदि $\tan \theta - \cot \theta = a$ और $\sin \theta + \cos \theta = b$ है,तो ${({b^2} - 1)^2}({a^2} + 4)$ का मान ज्ञात कीजिए।

  • A
    $2$
  • B
    $-4$
  • C
    $\pm 4$
  • D
    $4$

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