如图,在
中,
,点
在斜边
上,以
为直径的⊙
与
相切于
.若
.
(1)求⊙
的半径;
(2)求图中阴影部分的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b86e090e78658672118df1531e74d9b.png)
(1)求⊙
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)求图中阴影部分的面积.
![](https://img.xkw.com/dksih/QBM/2018/2/10/1879542132170752/1880908852256768/STEM/fc23ae94920a46b78002a74ad7590304.png?resizew=166)
更新时间:2018-02-12 20:21:46
|
【知识点】 切线的性质和判定的综合应用解读
相似题推荐
解答题-证明题
|
适中
(0.65)
名校
解题方法
【推荐1】如图,AB、AC分别是⊙O的直径和弦,OD⊥AC于点D.过点A作⊙O的切线与OD的延长线交于点P,PC、AB的延长线交于点E.
![](https://img.xkw.com/dksih/QBM/2020/4/18/2444244384391168/2444916131569664/STEM/310e060d728140db843052f9ddf9a800.png?resizew=196)
(1)求证:PC是⊙O的切线.
(2)若∠ABC=60°,AB=2,求图中阴影部分的面积.
![](https://img.xkw.com/dksih/QBM/2020/4/18/2444244384391168/2444916131569664/STEM/310e060d728140db843052f9ddf9a800.png?resizew=196)
(1)求证:PC是⊙O的切线.
(2)若∠ABC=60°,AB=2,求图中阴影部分的面积.
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解答题-证明题
|
适中
(0.65)
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【推荐2】如图,
是⊙O的直径,射线
交⊙O于点
,
是劣弧
上一点,且
平分
,过点
作
于点
,延长
和
的延长线交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/d9d860ae-984e-480e-99ce-c87edc6a8193.png?resizew=183)
(1)证明:
是⊙O的切线;
(2)若
,
,求⊙O的半径.
![](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/289d7a880379d6060065c829b45b0ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f7b0ff4a3936218c6586136273a449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0427a0a3f28f12266b7975c1439f6b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b6a742dbacdab5aaa298007663dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc3e8a1475b983d1a4295db0e16d4c2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/d9d860ae-984e-480e-99ce-c87edc6a8193.png?resizew=183)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c3ca8875d6fb8a88e2eaec275befe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d7b2c3d85bff328f68957dcd92df1f7.png)
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