$\log _{\frac{1}{8}\csc^2 \frac{\pi}{8}} \sin^2 \frac{3\pi}{8}$ का मान ज्ञात कीजिए।

  • A
    $0$
  • B
    $\frac{1}{2}$
  • C
    $1$
  • D
    परिभाषित नहीं

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