$\text{આપેલ છે કે, } \frac{\sin 1^{\circ}}{\sin x^{\circ} \sin (x+1)^{\circ}} = \cot x^{\circ} - \cot (x+1)^{\circ}, \text{ તો } \frac{1}{\sin 45^{\circ} \sin 46^{\circ}} + \frac{1}{\sin 46^{\circ} \sin 47^{\circ}} + \dots + \frac{1}{\sin 89^{\circ} \sin 90^{\circ}} \text{ ની કિંમત શોધો.}$

  • A
    $\sin 1^{\circ}$
  • B
    $\cot 1^{\circ}$
  • C
    $-\cot 1^{\circ}$
  • D
    $\operatorname{cosec} 1^{\circ}$

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