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三角関数sinθ・cosθ・tanθの値と単位円
Author:
斎藤 幸弘
GeoGebra
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standingwave-reflection-free
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円の外接正多角形と内接正多角形の差の比
1-1
算法天生法指南二之巻(46)解答
2次関数 β 演習49
三角比の拡張
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Circle
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Continuity
Rectangle