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锐角三角函数
Author:
孙逸旻
Topic:
Trigonometric Functions
GeoGebra
New Resources
找出對稱軸
兩位數除以一位數（一）
異分母分數減法
【案例】圆柱体内放置一个大球六个小球
柱體建築師
Discover Resources
判斷三角形
中一︰相似圖形（平移、旋轉、反射、放大縮小）
动态演示
選修數學
Trigonometric Ratios
Discover Topics
Random Experiments
Numbers
Special Points
Matrices
Intersection