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三角函數sine跟cosine
Author:
JUNWAYLIANG
GeoGebra
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【案例】2018年全国1卷理科12题
画直线等分三角形的面积
球體建築師
第八周作业
三位數除以一位數（一）
Discover Resources
Percentage（百分法）
Magnitude of cosine
Angle Between a Line and a Plane Definition 線與平面的交角 定義
兩圓位置關係與公切線
橢圓面積的計算
Discover Topics
Geometric Mean
Multiplication
Terms
Scalene Triangles
Pythagoras or Pythagorean Theorem