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餘弦定理
Author:
羅驥韡 (Pegasus Roe)
Topic:
Cosine
GeoGebra
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【案例】圆柱体内放置一个大球六个小球
兩位數加法
三位數除以一位數（二）
【案例】2013年安徽高考15题
直線的斜率
Discover Resources
binary number system
三角函數with sine, cosine圖形
圖形D
Chords of a Circle
橢圓的副本
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Equations
Special Points
Pythagoras or Pythagorean Theorem
Curve Sketching
Cuboid