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Parik
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Feb 4 '11 at 12:34
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How to prove that: $\tan(3\pi/11) + 4\sin(2\pi/11) = \sqrt{11}$
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Geometry problem on the incentre and circumcenter of a triangle
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How to prove that: $\tan(3\pi/11) + 4\sin(2\pi/11) = \sqrt{11}$
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Geometry problem on the incentre and circumcenter of a triangle
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