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三角函數圖解 的複本
Author:
王映禵
,
羅驥韡 (Pegasus Roe)
GeoGebra
參考資料：
https://plus.google.com/110535140812358973025/posts/EnrM8uNUsQk
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近似值：有效數字
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謝丞宇
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Copy of Mjerenje obujma 4
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Tree Diagrams
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