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यदि $(\alpha+\beta)$,$\frac{\pi}{2}$ का गुणज नहीं है और $3 \sin (\alpha-\beta)=5 \cos (\alpha+\beta)$ है,तो $\tan \left(\frac{\pi}{4}+\alpha\right)+4 \tan \left(\frac{\pi}{4}+\beta\right)=$

$\cos \frac{7 \pi}{8}+\cos \frac{\pi}{4}+\cos \left(\frac{-\pi}{8}\right)-1=$

$\sum\limits_{r = 1}^{89} {{\log _3}(\tan {r^o})} = $

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यदि $\tan \alpha = \frac{x^2 - x}{x^2 - x + 1}$ और $\tan \beta = \frac{1}{2x^2 - 2x + 1}$ $(x \ne 0, 1)$,जहाँ $0 < \alpha, \beta < \frac{\pi}{2}$ है,तो $\tan(\alpha + \beta)$ का मान किसके बराबर है?

यह ज्ञात है कि $\sin \beta = \frac{4}{5}$ और $0 < \beta < \pi$. तब $\frac{\sqrt{3} \sin(\alpha + \beta) - \frac{2}{\cos(\pi/6)} \cos(\alpha + \beta)}{\sin \alpha}$ का मान क्या है?

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