यदि $3 \sin x + 4 \cos x = 5$ है,तो $6 \tan \frac{x}{2} - 9 \tan^2 \frac{x}{2}$ का मान ज्ञात कीजिए।

  • A
    $0$
  • B
    $1$
  • C
    $3$
  • D
    $4$

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यदि $x \in \left(-\frac{\pi}{2}, \frac{\pi}{2}\right)$ है,तो $\log \sec x = $

यदि $k = \sin \frac{\pi}{18} \cdot \sin \frac{5\pi}{18} \cdot \sin \frac{7\pi}{18}$ है,तो $k$ का संख्यात्मक मान क्या है?

$\sqrt{2} + \sqrt{3} + \sqrt{4} + \sqrt{6}$ का मान ज्ञात कीजिए।

यदि $90^{\circ} < A < 180^{\circ}$ और $\sin A = \frac{4}{5}$ है,तो $\tan \frac{A}{2} =$

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

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