सिद्ध करें कि \( \cot 48^{\circ} \cdot \cot 23^{\circ} \cdot \cot 42^{\circ} \cdot \cot 67^{\cir...
सिद्ध करें कि \( \cot 48^{\circ} \cdot \cot 23^{\circ} \cdot \cot 42^{\circ} \cdot \cot 67^{\circ}=1 \)
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