如图,已知
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45739116f428f7c6c5964de72a1fa101.png)
___
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e46e27ca861c8bfcfedc2604fa7b3bba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3272ff8882120af1bcd3e9ed91963059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45739116f428f7c6c5964de72a1fa101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/24986360-5960-4af3-acfc-38db72317926.png?resizew=109)
更新时间:2024-01-25 21:28:20
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【知识点】 几何图形中角度计算问题解读