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正切函數 tan x
Author:
enocyon
GeoGebra
New Resources
錐體建築師
畫出對稱圖形
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
近似值：有效數字
Discover Resources
分數除法 1：a ÷ b（均分）
二維碰撞
task6
總結
勾股定理
Discover Topics
Trigonometry
Congruence
Sphere
Geometric Mean
Pyramid