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Trigonometry / Compass and straightedge constructions / Sine / Trigonometric functions / Complex number / Circle / Triangle / Angle / Methods of contour integration / Geometry / Mathematics / Mathematical analysis


Construction of a 72◦ Angle E. L. Lady (June 26, 2009) Although I don’t know a proof, it seems to be common knowledge that one cannot construct an angle of 1◦ by means of compass and straightedge. But of course eve
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Document Date: 2009-06-26 14:16:10


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