$\frac{{\cos 12^\circ - \sin 12^\circ }}{{\cos 12^\circ + \sin 12^\circ }} + \frac{{\sin 147^\circ }}{{\cos 147^\circ }} = $

  • A
    $1$
  • B
    $-1$
  • C
    $0$
  • D
    इनमें से कोई नहीं

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