基礎數學
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第6章 三角函數
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6.3 廣義角三角函數
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6.2 有向角及其度量
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6.4 正弦與餘弦定理
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2 months ago
https://www.geogebra.org/m/cs6SZPf9
https://www.geogebra.org/m/DStyEuTs#material/J2czZcvw
https://www.geogebra.org/m/uteKwe3Y
https://www.geogebra.org/m/fv8ddtaj
https://www.geogebra.org/m/FcwE2Kwu
https://www.geogebra.org/m/fmb6hygj
特殊角的三角函數值
https://www.geogebra.org/m/GFpcecj9
https://www.geogebra.org/m/geZ4hED6#material/qdZhWjPt
https://www.geogebra.org/m/rugteqxp
https://www.geogebra.org/m/BeVqyWeG
https://www.geogebra.org/m/fxeyx2jz
