如图,已知
,
是
的两条弦,
,
,
,则
的半径等于________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bb2d945b7908ebac080e6595d4895f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ac2e11788860424508ea9e80cf89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/5/f3222943-ee99-495b-923d-342417956549.png?resizew=143)
2014·湖南·高考真题 查看更多[4]
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更新时间:2019-01-30 18:14:09
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【知识点】 几何证明选讲
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较易
(0.85)
【推荐1】如图,圆
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![](https://img.xkw.com/dksih/QBM/2013/5/27/1571230668906496/1571230674534400/STEM/0e4fba115ce04ae7b76515ebb94daf71.png?resizew=151)
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填空题-单空题
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【推荐2】(几何证明选讲)如图,点P为圆O的弦AB上的一点,连接PO,过点P作PC^OP,且PC交圆O于C. 若AP=4,PC=2,则PB=___ .
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571958837633024/1571958843097088/STEM/7b8ff4206bcb4350b5317f7512aea7ed.png?resizew=120)
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