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-3/2 ≤ cosα + cosβ + cosγ ≤ 3
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
前提:α + β + γ = 0
New Resources
球體建築師
【案例】2018年全国1卷理科12题
sanjiaohanshu
兩組對邊相等和有直角的四邊形
GeoGebra笔记功能体验课件
Discover Resources
由組織圖到頻數多邊形
奧運5色環
吃點點
線的面化
【案例】2018年全国1卷理科12题
Discover Topics
Quadrilaterals
Plane Figures or Shapes
Quadratic Equations
Tree Diagrams
Hypergeometric Distribution