$\sin ^2 \frac{\pi}{8} + \sin ^2 \frac{3\pi}{8} + \sin ^2 \frac{5\pi}{8} + \sin ^2 \frac{7\pi}{8}$ નું મૂલ્ય શોધો.

  • A
    $1$
  • B
    $2$
  • C
    $1\frac{1}{8}$
  • D
    $2\frac{1}{8}$

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કિંમત શોધો: $\sin ^2\frac{\pi }{8} + \sin ^2\frac{3\pi }{8} + \sin ^2\frac{5\pi }{8} + \sin ^2\frac{7\pi }{8} = $

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