यदि $540^{\circ} < \theta < 630^{\circ}$ और $\tan \theta = \frac{5}{12}$ है,तो $\frac{\cos \frac{\theta}{2} - 5 \sin \frac{\theta}{2}}{\sqrt{-(12 \sec \theta + 5 \operatorname{cosec} \theta)}} = $

  • A
    $-26$
  • B
    $26$
  • C
    $1$
  • D
    $-1$

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$\tan A + 2 \tan 2A + 4 \tan 4A + 8 \cot 8A = $

$\tan \alpha + 2 \tan 2 \alpha + 4 \tan 4 \alpha + 8 \cot 8 \alpha = $

$\cos ^3 \theta + \cos ^3(120^{\circ} + \theta) + \cos ^3(\theta - 120^{\circ}) = $

यदि $33\theta = \pi$ है, तो $\cos \theta \cos 2\theta \cos 4\theta \cos 8\theta \cos 16\theta$ का मान है

यदि $\left(\frac{\sin 3 \theta}{\sin \theta}\right)^2-\left(\frac{\cos 3 \theta}{\cos \theta}\right)^2=a \cos b \theta$ है,तो $a: b=$

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