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两角和的正弦公式
Author:
zhang hongwei
Topic:
Trigonometric Functions
GeoGebra
New Resources
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
兩位數加法
算柱 (兩位數)
找出對稱軸
Discover Resources
Special Lines & Centres of Triangles 三角形的特殊線和中心
正立方體中的正四面體
高中数学
棒形圖2(我最喜愛的科目)
(008)80102
Discover Topics
Vectors 3D (Three-Dimensional)
Matrices
Sine
Perimeter
Quadratic Equations