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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$\cos \frac{\pi}{2^2} \cdot \cos \frac{\pi}{2^3} \cdot \dots \cdot \cos \frac{\pi}{2^{10}} \cdot \sin \frac{\pi}{2^{10}}$ का मान है

यदि $a \sin \theta = b \cos \theta$,जहाँ $a, b \neq 0$,तो $a \cos 2 \theta + b \sin 2 \theta = $

यदि $\tan \alpha = \frac{-12}{5}$,$\cot \beta = \frac{7}{24}$,$\alpha$ दूसरे चतुर्थांश में नहीं है और $\beta$ पहले चतुर्थांश में नहीं है,तो $\sqrt{13} \sin \frac{\alpha}{2} + \cos \frac{\beta}{2} + \tan \frac{\alpha}{2} \cot \frac{\beta}{2} = $

सिद्ध कीजिए कि $\cos^{2} 2x - \cos^{2} 6x = \sin 4x \sin 8x$.

$\cos A \cos 2 A \cos 4 A \ldots \cos 2^{n-1} A$ का मान क्या है?

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