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两角和的正弦公式
Author:
zhang hongwei
Topic:
Trigonometric Functions
GeoGebra
New Resources
画直线等分三角形的面积
兩位數除以一位數（二）
拼砌四邊形
柱體建築師
四邊形的特性
Discover Resources
廣義量角器
橢圓
Apollonius Problem gergonne
Taylor polynomials
平移
Discover Topics
Correlation
Pie Chart or Circle Chart
Solids or 3D Shapes
Translation
Perimeter