如图,
中,
,
,以直角边
为直径的
交
于点
,则
所对圆心角的大小是______ ,若
,则
的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bb3820bab977db734f4335e4fde720.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bb3820bab977db734f4335e4fde720.png)
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2023·甘肃兰州·一模 查看更多[1]
更新时间:2023-04-23 19:39:03
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【推荐1】如图所示,在△ABC中,∠C=90°,DE垂直平分AB,交BC于点E,垂足为点D,BE=8cm,∠B=15°,则AC等于__ .
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【推荐1】如图,
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