यदि $\cos \theta = \frac{-3}{5}$ और $\pi < \theta < \frac{3\pi}{2}$ है,तो $\tan \frac{\theta}{2} + \sin \frac{\theta}{2} + 2 \cos \frac{\theta}{2} =$

  • A
    $-1$
  • B
    $1$
  • C
    $-2$
  • D
    $2$

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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)}} = $

$(\sec 2A + 1)\sec^2 A = $

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

यदि $\frac{2 \tan(x)}{1-\tan^2(x)}$ का मान धनात्मक है,तो $x$ के वे मान ज्ञात कीजिए जिनके लिए $x \in \left(0, \frac{\pi}{2}\right)$ है।

$\frac{\sin 5 \theta}{\sin \theta}$ किसके बराबर है?

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