如图是一段圆弧
,点
是这段弧所在圆的圆心,
为
上一点,
于
点.若
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/96644d58-b891-4a9b-937d-69252de84418.png?resizew=226)
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![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/96644d58-b891-4a9b-937d-69252de84418.png?resizew=226)
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更新时间:2024-02-28 14:30:04
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