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cos(π/n)cos(2π/n)cos(3π/n) ... cos(nπ/n) = ?
Author:
羅驥韡 (Pegasus Roe)
Topic:
Complex Numbers
GeoGebra
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第八周作业
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兩組對邊相等和有直角的四邊形
判斷球體
小数 的副本
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