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正弦與餘弦函數
Author:
luke huang
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
第八周作业
兩組對邊相等的四邊形
球体的体积推导（优化版）
Discover Resources
COS 特別角
平行四边形面积演示
三比值和為一
Similar triangles in a triangle
Shoplifting and theft histogram
Discover Topics
Derivative
Confidence Interval
Symmetry
Fractal Geometry
Normal Distribution