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三角函數sine跟cosine
Author:
JUNWAYLIANG
GeoGebra
New Resources
兩位數加法
找出對稱軸
兩位數除以一位數（二）
兩組對邊相等的四邊形
拼砌四邊形
Discover Resources
簡單拋物線
circuit
密鋪圖形
異側AP+BP最小值
圓周 (圖形D) 的複本
Discover Topics
Combinatorics
Sphere
Optimization Problems
Ellipse
Percentages