如图,
,
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adaae99b4ac308549134169e69247a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360ebefca282836247bdbb0d5018879c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3ba14572ca99b865bdbecf3bbc788c0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/895a7a7b-fbdc-4c17-bab5-6d9fa7e0087e.png?resizew=168)
更新时间:2023-01-13 21:04:25
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