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特殊な正接の2倍角の視覚的理解

Author:holon

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standingwave-plus
目で見る立方体の2等分
接点の作る円は内接円
サイクロイド
直線の軌跡

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上界
数学2 平行線と面積(求積公式との関係)
the earth and sun
三角形の心の極線と内接二次曲線
Similar transformation(相似形の変身)

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Algebra
Area
Step Functions
Scalene Triangles
Derivative

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