1 . 如图,PA切圆O于点A,割线PBC经过圆心O,若PB=OB=1,OD平分∠AOC,交圆O于点D,连接PD交圆O于点E,则PE的长等于( )
![](https://img.xkw.com/dksih/QBM/2017/7/8/1732926192410624/1736590201782272/STEM/8cfe286cea9147fd9d2f7753c9016565.png?resizew=159)
![](https://img.xkw.com/dksih/QBM/2017/7/8/1732926192410624/1736590201782272/STEM/8cfe286cea9147fd9d2f7753c9016565.png?resizew=159)
A.![]() ![]() | B.![]() | C.![]() | D.![]() |
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2 . 如图所示,△ABC内接于圆O,过点A的切线交BC的延长线于点P,D为AB的中点,DP交AC于点M,若BP=8,AM=4,AC=6,则PA=( )
![](https://img.xkw.com/dksih/QBM/2017/7/8/1732926192410624/1736590201765888/STEM/2a6aa2d7eb944f3ebab6cd0988002720.png?resizew=156)
![](https://img.xkw.com/dksih/QBM/2017/7/8/1732926192410624/1736590201765888/STEM/2a6aa2d7eb944f3ebab6cd0988002720.png?resizew=156)
A.4![]() | B.3![]() | C.![]() | D.5![]() |
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3 . 如图,BD⊥AE,∠C=90°,AB=4,BC=2,AD=3,则CE=( )
![](https://img.xkw.com/dksih/QBM/2017/7/8/1732926192410624/1736590201716736/STEM/0ad31bbc32664c0f889be78fe6fe353c.png?resizew=137)
![](https://img.xkw.com/dksih/QBM/2017/7/8/1732926192410624/1736590201716736/STEM/0ad31bbc32664c0f889be78fe6fe353c.png?resizew=137)
A.![]() | B.![]() | C.![]() | D.![]() |
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2018高三·全国·专题练习
名校
4 . 已知函数
,若方程
恰有三个实数根,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ee975cd32e42962d574dcc23daab5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abe68aa8a21f26b6b9f6889369aa5905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2017-03-17更新
|
660次组卷
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3卷引用:2-8 函数与方程(高效训练)-2019版导学教程一轮复习数学(人教版)
(已下线)2-8 函数与方程(高效训练)-2019版导学教程一轮复习数学(人教版)2017届福建省宁德市高三第一次(3月)质量检查数学理试卷山西省应县第一中学校2018-2019学年高二下学期期末考试数学(理)试题
2010高三·全国·专题练习
5 . 如图所示,过
外一点
作一条直线与
交于
,
两点,已知
,点
到
的切线长
,则弦
的长为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5fca8c94add435f4aefb933ffe55a01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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6 . 已知直角三角形周长为
,一锐角平分线分对边为3:5两部分.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/8/15819737-6aa9-4c81-ac40-9cf2e8d0f6a7.png?resizew=128)
(1)求直角三角形的三边长;
(2)求两直角边在斜边上的射影的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2442fce668d789c1019394a11ffa6450.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/8/15819737-6aa9-4c81-ac40-9cf2e8d0f6a7.png?resizew=128)
(1)求直角三角形的三边长;
(2)求两直角边在斜边上的射影的长.
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7 . 如图,AB为⊙O的直径,过点B作⊙O的切线BC,OC交⊙O于点E,AE的延长线交BC于点D.
![](https://img.xkw.com/dksih/QBM/2016/9/18/1573029659099136/1573029664481280/STEM/26e7223a52e742e0aa322cdfd1b4c576.png)
(Ⅰ)求证:CE2=CD•CB
(Ⅱ)若D为BC的中点,且BC=2
,求AB与DE的长.
![](https://img.xkw.com/dksih/QBM/2016/9/18/1573029659099136/1573029664481280/STEM/26e7223a52e742e0aa322cdfd1b4c576.png)
(Ⅰ)求证:CE2=CD•CB
(Ⅱ)若D为BC的中点,且BC=2
![](https://img.xkw.com/dksih/QBM/2016/9/18/1573029659099136/1573029664481280/STEM/62d59126a38745629a9bfe1e08752716.png)
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8 . 如图所示,AE切⊙D于点E,AC=CD=DB=10,则线段AE的长为
![](https://img.xkw.com/dksih/QBM/2017/7/19/1733338968555520/1734026604756992/STEM/109cc7d366e440f2b0ccdb5b3d4328ab.png?resizew=143)
![](https://img.xkw.com/dksih/QBM/2017/7/19/1733338968555520/1734026604756992/STEM/109cc7d366e440f2b0ccdb5b3d4328ab.png?resizew=143)
A.10 | B.16 | C.10 | D.18 |
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9 . 如图,在⊙O中,AB是弦,AC是⊙O的切线,A是切点,过 B作
BD⊥AC于D,BD交⊙O于E点,若AE平分∠BAD,则∠BAD=
![](https://img.xkw.com/dksih/QBM/2017/7/19/1733338968555520/1734026604748800/STEM/8c6859fc979844b9aba9882caf453eff.png?resizew=104)
BD⊥AC于D,BD交⊙O于E点,若AE平分∠BAD,则∠BAD=
![](https://img.xkw.com/dksih/QBM/2017/7/19/1733338968555520/1734026604748800/STEM/8c6859fc979844b9aba9882caf453eff.png?resizew=104)
A.30° | B.45° | C.50° | D.60° |
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10 . 已知PQ与圆O相切于点A,直线PBC交圆于B、C两点,D是圆上一点,且AB∥DC ,DC的延长线交PQ于点Q.
![](https://img.xkw.com/dksih/QBM/2016/4/12/1572588562546688/1572588568035328/STEM/ac6ae66cfecc4ccab7864831b5a9c67e.png)
(1)求证: AC2=CQ×AB;
(2)若AQ=2AP,AB=
,BP=2,求QD.
![](https://img.xkw.com/dksih/QBM/2016/4/12/1572588562546688/1572588568035328/STEM/ac6ae66cfecc4ccab7864831b5a9c67e.png)
(1)求证: AC2=CQ×AB;
(2)若AQ=2AP,AB=
![](https://img.xkw.com/dksih/QBM/2016/4/12/1572588562546688/1572588568035328/STEM/6c62ee9cadb44de8820f95ed21ba65d8.png)
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2016-12-03更新
|
316次组卷
|
4卷引用:福建省2016届高三毕业班总复习(几何选讲)单元过关平行性测试卷(文理科)数学试题