$\triangle ABC$ માં,$\tan \frac{A}{2} + \tan \frac{B}{2} =$

  • A
    $\frac{\cot \frac{C}{2}}{4s}$
  • B
    $\frac{2c \cot \frac{C}{2}}{a+b+c}$
  • C
    $\frac{2c \tan \frac{C}{2}}{s}$
  • D
    $\frac{c \tan \frac{C}{2}}{a+b+c}$

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