$\tan 20^{\circ} + \tan 40^{\circ} + \tan 60^{\circ} + \cdots + \tan 180^{\circ}$ का मान क्या है?

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

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$\frac{\sin 70^\circ + \cos 40^\circ}{\cos 70^\circ + \sin 40^\circ} = $

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