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两角差的正弦公式证明2
Author:
桃篮翁
GeoGebra
New Resources
平行線的斜率
兩位數除以一位數(二)
漂亮的摇摆曲线
圓周公式的應用
三位數除以一位數(二)
Discover Resources
地球儀5
畫方格
螢橋國中 鄭毅華
三節棍
範例二
Discover Topics
Tangent Function
Difference and Slope
Mathematics
Similar Triangles
Unit Circle