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正弦公式(證明)
Author:
Y.W. Liu
Topic:
Sine
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
第八周作业
三位數除以一位數（一）
錐體建築師
三位數除以一位數（二）
Discover Resources
等腰三角形
量角器
homework
向量分解的副本
k的几何意义
Discover Topics
Straight Lines
Optimization Problems
Confidence Interval
Functions
Differential Calculus