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-1 ≤ cosA cosB cosC ≤ 1/8
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
四邊形的特性
異分母分數減法
三位數除以一位數（一）
【案例】2018年全国1卷理科12题
拼砌四邊形
Discover Resources
maze-temp
zuiduan
start and end clock face
擴分和約分
黎曼和的副本
Discover Topics
Cube
Poisson Distribution
Definite Integral
Square
Geometric Distribution