$\tan 56^{\circ} - \tan 11^{\circ} - \tan 56^{\circ} \tan 11^{\circ}$ ની કિંમત શું છે?

  • A
    $-1$
  • B
    $0$
  • C
    $1$
  • D
    આમાંથી કોઈ નહીં

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