જો $\sin A = n \sin (A + 2B)$ હોય,તો $\tan (A + B) =$

  • A
    $\frac{1+n}{1-n} \tan B$
  • B
    $\frac{1-n}{1+n} \tan B$
  • C
    $\frac{1+n}{n-1} \tan B$
  • D
    $\frac{n-1}{n+1} \tan B$

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જો $\sin x + \operatorname{cosec} x = 3$ હોય,તો $\sin^{4} x + \operatorname{cosec}^{4} x$ ની કિંમત શોધો.

$\sqrt{3} \operatorname{cosec} 20^{\circ} - \sec 20^{\circ}$ ની કિંમત શોધો.

$(\sec A + \tan A - 1)(\sec A - \tan A + 1) - 2\tan A = $

જો $\cos \alpha = \frac{2 \cos \beta - 1}{2 - \cos \beta}$ હોય,તો $\tan \frac{\alpha}{2} \cot \frac{\beta}{2}$ ની કિંમત શોધો,જ્યાં $(0 < \alpha < \pi$ અને $0 < \beta < \pi)$.

જો $\sinh x = -\frac{1}{2}$ હોય,તો $\tanh 2x = $

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