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以 Unit Circle 了解 Sine 的正/負的副本
Author:
缪光亚
,
gklwong
以 Unit Circle 了解 Sine 的正/負
GeoGebra
New Resources
兩組對邊相等的四邊形
判斷球體
兩位數除以一位數（一）
算柱 (兩位數)
錐體建築師
Discover Resources
空間中平面
-3 ≤ cosA+cosB+cosC ≤ 3/2
百分數：折扣 / 賺賠
生长的海螺
SolvingEquation_Ver3
Discover Topics
Linear Equations
Parametric Curves
Conditional Probability
Sequences and Series
Curve Sketching