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Uses of Trigonometry
Author:
ylleung
GeoGebra
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柱體建築師
判斷球體
畫出對稱圖形
拼砌四邊形
異分母分數減法
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小時鐘
Proof of Pythagorean Theorem with Shearing
F2_Ch11.1_三角學(對鄰斜)
展開圓面積 (講義版)的副本
连续开方（制作：谢建华，修订：孟宝兴）
Discover Topics
Secant Line or Secant
Dilation
Line Segment
Sequences and Series
Trigonometry