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三角関数（正弦、余弦）
Author:
yukumura yasunori
Topic:
Trigonometric Functions
GeoGebra
New Resources
アステロイド
正１７角形 作図 regular 17-gon 2
接点の作る円は内接円
standingwave
等積変形2
Discover Resources
星芒形垂足線 (Astroid Pedal Curve)
最短の三角形
パスカルの６角形
紙に正方形の穴を開ける２
デルトイド
Discover Topics
Coordinates
Sequences and Series
Similar Triangles
Ellipse
Area