$\cos 20^{\circ} + 2 \sin^2 55^{\circ} - \sqrt{2} \sin 65^{\circ}$ નું મૂલ્ય શોધો.

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

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