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

  • A
    $1/2$
  • B
    $3/5$
  • C
    $3/2$
  • D
    $2$

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यदि $\sin \theta + \sin 2\theta + \sin 3\theta = \sin \alpha$ और $\cos \theta + \cos 2\theta + \cos 3\theta = \cos \alpha$ है,तो $\theta$ का मान ज्ञात कीजिए।

यदि $\sin \theta = \frac{24}{25}$ और $\theta$ दूसरे चतुर्थांश में स्थित है,तो $\sec \theta + \tan \theta = $

यदि $A + B = \frac{\pi}{4}$ है,तो $(1 + \tan A)(1 + \tan B) = $

$\frac{\sin A - 2 \sin^3 A}{2 \cos^3 A - \cos A}$ का मान क्या है?

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