如图,在圆
中有折线
,
,
,
,则弦
的长为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607543bb9f55b8a141ed2d6cf0e1a20b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d0da74a23540f3e7758f915f6d57bab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8b768530dc812e6642bd852f0f50cbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2018/10/11/2051388367642624/2052029265969152/STEM/a8b7ca0e94b64dce91c1c91019e07f9e.png?resizew=127)
更新时间:2018-10-17 10:38:18
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【推荐1】已知半径为2的
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【推荐2】
、
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