यदि $p = \tan 20^{\circ}$ है,तो $\frac{\tan 160^{\circ} - \tan 110^{\circ}}{1 + \tan 160^{\circ} \tan 110^{\circ}}$ का मान $p$ के पदों में क्या होगा?

  • A
    $\frac{1+p^2}{2p^2}$
  • B
    $\frac{1+p^2}{2p}$
  • C
    $\frac{1-p^2}{2p}$
  • D
    $\frac{1-p^2}{2p^2}$

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यदि $\cos x = -\frac{1}{3}$ और $x$ चतुर्थांश $III$ में स्थित है,तो $\sin \frac{x}{2}, \cos \frac{x}{2}$ और $\tan \frac{x}{2}$ का मान ज्ञात कीजिए।

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यदि $\frac{\sec 8\theta - 1}{\sec 4\theta - 1} = \frac{a + b \tan^2 2\theta}{1 + c \tan^2 2\theta + d \tan^4 2\theta}$ (जहाँ $\theta \neq \frac{n\pi}{16}, n \in I$),तो $(a - b + c - d)$ का मान ज्ञात कीजिए।

यदि $\text{cosec} \theta = \frac{p + q}{p - q}$ है,तो $\cot \left( \frac{\pi}{4} + \frac{\theta}{2} \right) = $

$\cos 15^{\circ} \cos 7.5^{\circ} \sin 7.5^{\circ}$ का मान क्या है?

यदि $\sin \alpha = \frac{-3}{5}$ जहाँ $\pi < \alpha < \frac{3\pi}{2}$ है,तो $\cos \frac{\alpha}{2} = $

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