જો $\sec \theta = m$ અને $\tan \theta = n$ હોય,તો $\frac{1}{m} \left[ m + n + \frac{1}{m + n} \right] = $

  • A
    $1$
  • B
    $2$
  • C
    $-1$
  • D
    $3$

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જો $\sin x \cdot \cosh y = \cos \theta$ અને $\cos x \cdot \sinh y = \sin \theta$ હોય,તો $\sin^2 x + \cosh^2 y = $

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$\frac{\cos 13^{\circ}-\sin 13^{\circ}}{\cos 13^{\circ}+\sin 13^{\circ}}+\frac{1}{\cot 148^{\circ}}$ ની કિંમત શોધો.

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