यदि $\tan \theta = \frac{\cos 15^{\circ} + \sin 15^{\circ}}{\cos 15^{\circ} - \sin 15^{\circ}}$ है,तो $\theta =$

  • A
    $\frac{\pi}{4}$
  • B
    $\frac{\pi}{3}$
  • C
    $\frac{\pi}{6}$
  • D
    $\frac{\pi}{2}$

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यदि $\cos(\alpha + \beta) = \frac{3}{5}$,$\sin(\alpha - \beta) = \frac{5}{13}$ और $0 < \alpha, \beta < \frac{\pi}{4}$ है,तो $\tan(2\alpha)$ का मान ज्ञात कीजिए।

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यदि $\tan A = \frac{1 - \cos B}{\sin B}$ है,तो $\tan B$ के पदों में $\tan 2A$ ज्ञात कीजिए और दर्शाइए कि:

$\tan 3A - \tan 2A - \tan A = $

यदि $A + B + C = 180^o$ है,तो $\frac{\tan A + \tan B + \tan C}{\tan A \cdot \tan B \cdot \tan C} = $

$\tan 75^\circ - \cot 75^\circ = $

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