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餘弦函數 y=Cos(x)
Author:
alicesung0324
GeoGebra
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第八周作业
【案例】2013年安徽高考15题
三位數除以一位數（一）
找出對稱軸
画直线等分三角形的面积
Discover Resources
Sum of Exterior Angles of Polygons 多邊形外角和
拋物線規
乘法1
正弦定理验证
三角函數值 (特別角)
Discover Topics
Quadratic Equations
Difference and Slope
General Quadrilateral
Symmetry
Subtraction