यदि $\sin \theta = -\frac{3}{4}$ है,तो $\sin 2 \theta = $

  • A
    $\frac{3 \sqrt{7}}{8}$
  • B
    $-\frac{3 \sqrt{7}}{8}$
  • C
    $\frac{2 \sqrt{3}}{7}$
  • D
    $-\frac{2 \sqrt{3}}{7}$

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