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# System prepended metadata

title: 三角函數關係

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* [三角函數關係(IG動畫)] (https://www.instagram.com/reel/C0Eicp7O4zk/)
![三角函數關係](https://hackmd.io/_uploads/ryPiKmoUp.jpg)
* [sin&cos特殊度值記憶法(IG動畫)](https://www.instagram.com/reel/CzY_yyMNa52/)
![三角函數特殊角](https://hackmd.io/_uploads/rJ2gq7oUT.jpg)

* [$sin^2+cos^2=1$ (IG動畫)](https://www.instagram.com/reel/CxfHD8Ktyhg/)
![sin2_cos2_1](https://hackmd.io/_uploads/Bycicmj8a.jpg)


* [三角函數-強森六邊形(網頁連結)](https://sylworld.666forum.com/t310-topic)
![Johosonshexagonalformation](https://hackmd.io/_uploads/SJC5YQs8T.gif)



