$\frac{{\cos {{10}^o} + \sin {{10}^o}}}{{\cos {{10}^o} - \sin {{10}^o}}} = $

  • A
    $\tan {55^o}$
  • B
    $\cot {55^o}$
  • C
    $-\tan {35^o}$
  • D
    $-\cot {35^o}$

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