यदि $\frac{\sqrt{2} \sin \alpha}{\sqrt{1+\cos 2 \alpha}}=\frac{1}{7}$ और $\sqrt{\frac{1-\cos 2 \beta}{2}}=\frac{1}{\sqrt{10}}$ जहाँ $\alpha, \beta \in (0, \frac{\pi}{2})$,तो $\tan (\alpha+2 \beta)$ का मान ज्ञात कीजिए।

  • A
    $1$
  • B
    $2$
  • C
    $2.5$
  • D
    $3.5$

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यदि $\cos x = \frac{2 \cos y - 1}{2 - \cos y}$ जहाँ $x, y \in (0, \pi)$,तो $\tan(x/2) \cot(y/2) =$

यदि $x \sin^3 \alpha + y \cos^3 \alpha = \sin \alpha \cos \alpha$ और $x \sin \alpha - y \cos \alpha = 0$ है,तो $x^2 + y^2 = $

$\tan ^2 \frac{\pi}{16}+\tan ^2 \frac{2 \pi}{16}+\tan ^2 \frac{3 \pi}{16}+\tan ^2 \frac{4 \pi}{16}+\tan ^2 \frac{5 \pi}{16}+\tan ^2 \frac{6 \pi}{16}+\tan ^2 \frac{7 \pi}{16} = ?$

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

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समीकरणों का निकाय: $2x \cos^2 \theta + y \sin 2\theta - 2 \sin \theta = 0$,$x \sin 2\theta + 2y \sin^2 \theta = -2 \cos \theta$,और $x \sin \theta - y \cos \theta = 0$,$\theta$ के सभी मानों के लिए,क्या कर सकता है:

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