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cosine formula

Author:Lam Ho Yeung

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第八周作业3
平行線的判定
百分數及其應用
第八周作业1
正方形雪花图案

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y=mx+k
Quadratic Graph - QESOSASS
tan900
双曲线轨迹演示
等比数列计算练习

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Addition
Diagrams
Orthocenter
Ellipse
Surface

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