જો $\sin x \cosh y = \cos \theta$,$\cos x \sinh y = \sin \theta$ અને $4 \tan x = 3$ હોય,તો $\sinh^2 y =$

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

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$\mathbb{R}$ પર $4 \cos \left(x^2\right) \cos \left(\frac{\pi}{3}+x^2\right) \cos \left(\frac{\pi}{3}-x^2\right)$ ના અંતિમ મૂલ્યો કયા છે?

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