$\sqrt{2} + \sqrt{3} + \sqrt{4} + \sqrt{6}$ ની કિંમત શોધો.

  • A
    $\cot(7\frac{1}{2}^{\circ})$
  • B
    $\sin(7\frac{1}{2}^{\circ})$
  • C
    $\sin(15^{\circ})$
  • D
    $\cos(15^{\circ})$

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જો $\text{cosec} \theta = \frac{p + q}{p - q}$ હોય,તો $\cot \left( \frac{\pi}{4} + \frac{\theta}{2} \right) = $

જો $2 \cos \theta = x + \frac{1}{x}$ હોય,તો $2 \cos 3 \theta = $

$\frac{1-\tan^2 15^{\circ}}{1+\tan^2 15^{\circ}} = ?$

$\cos 15^\circ = $

જો $630^{\circ} < \theta < 810^{\circ}$ અને $\tan \theta = -\frac{7}{24}$ હોય,તો $\cos \left(\frac{\theta}{4}\right) = $

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