ત્રિકોણ $ABC$ માં, જો $\tan \frac{A}{2} : \tan \frac{B}{2} : \tan \frac{C}{2} = 15 : 10 : 6$ હોય, તો $\frac{a}{b-c} =$

  • A
    $\frac{8}{3}$
  • B
    $\frac{7}{3}$
  • C
    $5$
  • D
    $4$

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$\triangle ABC$ માં,$\cot A+\cot B+\cot C=$

$\triangle ABC$ માં,પદ $\frac{\cos C+\cos A}{c+a}+\frac{\cos B}{b}$ ની કિંમત શોધો.

$\Delta ABC$ માં,જો $A = 30^o$,$b = 2$,અને $c = \sqrt{3} + 1$ હોય,તો $\frac{C - B}{2} = $ ....$^o$

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