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两角和的余弦公式几何证明
Author:
桃篮翁
GeoGebra
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異分母分數減法
算柱 (兩位數)
找出對稱軸
直角坐標平面上的旋轉變換
柱體建築師
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angle 123
a sin(bx+c) + d 的圖形的副本
一位数加减法运算自我测评
迭代多边形;平移;向量
求切线方程(改进)
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Sine
Terms
Vectors
Polygons
Subtraction