सिद्ध कीजिए कि \( \cot 7 \frac{1}{2}^{\circ}=2+\sqrt{2}+\sqrt{3}+\sqrt{6} \).
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सिद्ध कीजिए कि \( \cot 7 \frac{1}{2}^{\circ}=2+\sqrt{2}+\sqrt{3}+\sqrt{6} \).
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