જો $\operatorname{Sinh}^{-1}(2)+\operatorname{Sinh}^{-1}(3)=\alpha$ હોય,તો $\sinh \alpha=$

  • A
    $2 \sqrt{5}+3 \sqrt{10}$
  • B
    $3 \sqrt{10}+3 \sqrt{5}$
  • C
    $2 \sqrt{10}+2 \sqrt{5}$
  • D
    $2 \sqrt{10}+3 \sqrt{5}$

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$\operatorname{cosec} 48^{\circ}+\operatorname{cosec} 96^{\circ}+\operatorname{cosec} 192^{\circ}+\operatorname{cosec} 384^{\circ}=$

પદાવલિ $\frac{2(\sin 1^{\circ} + \sin 2^{\circ} + \sin 3^{\circ} + \dots + \sin 89^{\circ})}{2(\cos 1^{\circ} + \cos 2^{\circ} + \dots + \cos 44^{\circ}) + 1}$ નું મૂલ્ય કેટલું થાય?

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