જો $\tan 80^{\circ} = \alpha$ અને $\tan 47^{\circ} = \beta$ હોય,તો $\tan 37^{\circ}$ ની કિંમત કેટલી થાય?

  • A
    $\frac{\alpha - \beta}{1 + \alpha \beta}$
  • B
    $\frac{\alpha \beta + 1}{\alpha - \beta}$
  • C
    $\frac{\alpha \beta - 1}{\alpha + \beta}$
  • D
    $\frac{\alpha + \beta}{1 - \alpha \beta}$

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$\frac{\tan 80^{\circ}-\tan 10^{\circ}}{\tan 70^{\circ}}$ ની કિંમત શોધો.

જો $m \tan (\theta - 30^\circ) = n \tan (\theta + 120^\circ)$ હોય,તો $\frac{m + n}{m - n} = $

જો $\theta+\phi=\frac{\pi}{4}$ હોય, તો $(1+\tan \theta)(1+\tan \phi)$ ની કિંમત કેટલી થાય?

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