यदि $\frac{\cos ^2 48^{\circ}-\sin ^2 12^{\circ}}{\sin ^2 24^{\circ}-\sin ^2 6^{\circ}}=\frac{\alpha+\beta \sqrt{5}}{2}$, जहाँ $\alpha, \beta \in N$, तो $\alpha+\beta$ का मान . . . . . . है।

  • A
    $2$
  • B
    $4$
  • C
    $6$
  • D
    $8$

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