यदि $\frac{\sec \theta+\tan \theta}{\sec \theta-\tan \theta}=2 \frac{51}{79}$ है,तो $\sin \theta$ का मान ज्ञात कीजिए।

  • A
    $\frac{65}{144}$
  • B
    $\frac{39}{72}$
  • C
    $\frac{91}{144}$
  • D
    $\frac{35}{72}$

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यदि $x + y = 3 - \cos 4\theta$ और $x - y = 4 \sin 2\theta$ है,तो:

यदि $\cos A = \frac{3}{4}$ है,तो $32\sin \left( \frac{A}{2} \right)\sin \left( \frac{5A}{2} \right) = $

$\sin \theta + \cos \theta$ का मान कब अधिकतम होगा?

यदि $\sin 600^{\circ} \cos 30^{\circ} + \cos 120^{\circ} \sin 150^{\circ} = k$ है,तो $k =$

$\cos 2\theta + 2\cos \theta$ हमेशा

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