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特殊な正接の2倍角の視覚的理解
Author:
holon
GeoGebra
New Resources
接点の作る円は内接円
正１７角形 作図 regular 17-gon
フーリエ級数展開
standingwave-plus
standingwave
Discover Resources
三線座標
オイラー線の二種類の鏡映
内分点と外分点
同位角，錯角
フーリエ級数とリサージュ図形
Discover Topics
Circumcircle or Circumscribed Circle
Volume
Logarithm
Cone
Trigonometric Functions