यदि $\cos^3 \theta + \cos^3 \left(\frac{2 \pi}{3} + \theta\right) + \cos^3 \left(\frac{4 \pi}{3} + \theta\right) = \alpha \cos 3 \theta$ है,तो $\alpha$ का मान ज्ञात कीजिए।

  • A
    $\frac{1}{4}$
  • B
    $\frac{3}{4}$
  • C
    $\frac{5}{4}$
  • D
    $\frac{7}{4}$

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यदि $\tan x + \tan \left(x + \frac{\pi}{3}\right) + \tan \left(x + \frac{2\pi}{3}\right) = 3$ है,तो $\tan 3x$ का मान क्या होगा?

$\cos A \cos 2 A \cos 4 A \ldots \cos 2^{n-1} A$ का मान क्या है?

यदि $x = \log_e \left[ \cot \left( \frac{\pi}{4} + \theta \right) \right]$ जहाँ $|\theta| < \frac{\pi}{4}$ है,तो $\sinh x =$

$\frac{\sin 3\theta - \cos 3\theta}{\sin \theta + \cos \theta} + 1 = $

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