यदि $\sin x \cosh y = \cos \theta$,$\cos x \sinh y = \sin \theta$ और $4 \tan x = 3$ है,तो $\sinh^2 y =$

  • A
    $\frac{4}{5}$
  • B
    $\frac{9}{16}$
  • C
    $\frac{9}{25}$
  • D
    $\frac{16}{25}$

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यदि $\tan A = \tan \alpha \coth x = \cot \beta \tanh x$ है,तो $\tan (\alpha + \beta) =$

व्यंजक $\frac{(\sin 36^{\circ} + \cos 36^{\circ} - \sqrt{2} \sin 27^{\circ})^2}{2 \sin 54^{\circ}}$ का मान किससे कम है?

मान लीजिए $S = \left\{ \theta \in \left( 0, \frac{\pi}{2} \right) : \sum_{m=1}^{9} \sec \left( \theta + (m-1) \frac{\pi}{6} \right) \sec \left( \theta + \frac{m \pi}{6} \right) = -\frac{8}{\sqrt{3}} \right\}$. तो:

यदि $\tan A+\tan B+\cot A+\cot B=\tan A \tan B-\cot A \cot B$ और $0^{\circ} < A+B < 270^{\circ}$ है,तो $A+B=$ ($^{\circ}$ में)

यदि $\sin 2\theta + \sin 2\phi = 1/2$ और $\cos 2\theta + \cos 2\phi = 3/2$ है,तो $\cos^2(\theta - \phi) = $

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