ધારો કે $a \in \mathbb{R}$ નો એવો ગણ કે જેના માટે સમીકરણ $\cos 2x + a \sin x = 2a - 7$ નો ઉકેલ $[p, q]$ હોય અને $r = \tan 9^{\circ} - \tan 27^{\circ} - \frac{1}{\cot 63^{\circ}} + \tan 81^{\circ}$ હોય,તો $pqr$ ની કિંમત .................... થાય.

  • A
    $62$
  • B
    $55$
  • C
    $48$
  • D
    $45$

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જો $\tan \theta = \frac{x \sin \phi}{1 - x \cos \phi}$ અને $\tan \phi = \frac{y \sin \theta}{1 - y \cos \theta}$ હોય,તો $\frac{x}{y} = $

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$\tan 9^\circ - \tan 27^\circ - \tan 63^\circ + \tan 81^\circ = $

$\cos^2 76^{\circ} + \cos^2 16^{\circ} - \cos 76^{\circ} \cos 16^{\circ}$ ની કિંમત શોધો.

જો $\sinh x = -\frac{4}{3}$ હોય,તો $\sinh 2x + \cosh 2x = $

$\operatorname{cosec} 48^{\circ}+\operatorname{cosec} 96^{\circ}+\operatorname{cosec} 192^{\circ}+\operatorname{cosec} 384^{\circ}=$

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