Problem

Problem

The sum 1sin⁡45∘sin⁡46∘+1sin⁡47∘sin⁡48∘+1sin⁡49∘sin⁡50∘+⋯+1sin⁡133∘sin⁡134∘\frac{1}{\sin 45^\circ \sin 46^\circ} + \frac{1}{\sin 47^\circ \sin 48^\circ} + \frac{1}{\sin 49^\circ \sin 50^\circ} + \dots + \frac{1}{\sin 133^\circ \sin 134^\circ} is equal to a. sec⁡(1∘)\sec(1^\circ) b. csc⁡(1∘)\csc(1^\circ) c. cot⁡(1∘)\cot(1^\circ) d. None of these

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