如图,
内接于
,点O在
的内部,直径
交线段
于点D,点P是
延长线上一点,连接
,满足
.
是
的切线;
(2)若
,
,点C为
的中点,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35dca4e3d989f2b2e687f8af3077fd50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc5a73f3b79ee563bf318c2de7778b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74e6ed441c4708afe23739210b2733e1.png)
更新时间:2024-05-20 14:54:37
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,Rt
中
,
,点
在
边上,以
为直径画
与
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/9764f1c0-ad36-4bc4-a36b-bea4a1c3003c.png?resizew=215)
(1)求证:
是
的切线;
(2)若
,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b406c5585d1554f3113b0b655300f6c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/9764f1c0-ad36-4bc4-a36b-bea4a1c3003c.png?resizew=215)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9ee37ef98eb69f58dd3a0307b0c306c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
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|
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(0.65)
【推荐2】如图,AB为半圆O的直径,点C在半圆O上,过点O作BC的平行线交AC于点E,交过点A的直线于点D,且∠D=∠BAC. 求证:AD是半圆O的切线.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/15/884dd03e-256c-4b77-b81e-5e196edf53a4.png?resizew=166)
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解答题-证明题
|
适中
(0.65)
【推荐1】如图1,
内接于⊙O,过C作射线CP与BA的延长线交于点P,
.
![](https://img.xkw.com/dksih/QBM/2020/3/9/2415485215023104/2416394321477632/STEM/06174a7f302f40c0a27f85a162635136.png?resizew=345)
(1)求证:CP是⊙O的切线;
(2)若
,
,求AB的长;
(3)如图2,D是BC的中点,PD与AC交于点E,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b85a88b4c8c3243afd7386f06e1455f.png)
![](https://img.xkw.com/dksih/QBM/2020/3/9/2415485215023104/2416394321477632/STEM/06174a7f302f40c0a27f85a162635136.png?resizew=345)
(1)求证:CP是⊙O的切线;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eea78bf026d76f1cb9cc3dc9349a193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
(3)如图2,D是BC的中点,PD与AC交于点E,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32919620163697e7882d3b5a6bb28107.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,在
中,
,
是角平分线,
平分
交
于点
,经过
、
两点的
交
于点
,交
于点
,
恰为
的直径.
![](https://img.xkw.com/dksih/QBM/2022/8/24/3051285920243712/3133576737841152/STEM/ae76fa24a6ee4af184990c3369faeae6.png?resizew=173)
(1)判断
与
的位置关系,并说明理由;
(2)若
,
时,求
的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab41054fa9ce51b68e78d9c0cf398d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0e65e147b109f2bbfd3a3f502bbc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f10681704c4fccfd37664eaf34391dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af464ddb07308be2cd6f02e61fd08eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://img.xkw.com/dksih/QBM/2022/8/24/3051285920243712/3133576737841152/STEM/ae76fa24a6ee4af184990c3369faeae6.png?resizew=173)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0880fcd038a82649d0e55227c576362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14169008ac2d6cfc0a5b7fb33cd3d7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
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解答题-证明题
|
适中
(0.65)
解题方法
【推荐1】探究证明:
(1)如图1,正方形ABCD中,点M、N分别在边BC、CD上,AM⊥BN.求证:BN=AM;
![](https://img.xkw.com/dksih/QBM/2020/11/12/2591282699124736/2596269116760064/STEM/7c43fee36de947188d16b133bc1342a3.png?resizew=450)
(2)如图2,矩形ABCD中,点M在BC上,EF⊥AM,EF分别交AB、CD于点E、F.求证:
;
(3)如图3,四边形ABCD中,∠ABC=90°,AB=AD=10,BC=CD=5,AM⊥DN,点M、N分别在边BC、AB上,求
的值.
(1)如图1,正方形ABCD中,点M、N分别在边BC、CD上,AM⊥BN.求证:BN=AM;
![](https://img.xkw.com/dksih/QBM/2020/11/12/2591282699124736/2596269116760064/STEM/7c43fee36de947188d16b133bc1342a3.png?resizew=450)
(2)如图2,矩形ABCD中,点M在BC上,EF⊥AM,EF分别交AB、CD于点E、F.求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d60b43018ebce7fff9abc2c5378e3c9.png)
(3)如图3,四边形ABCD中,∠ABC=90°,AB=AD=10,BC=CD=5,AM⊥DN,点M、N分别在边BC、AB上,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f710f8f1fa0df203765d18692ded6a91.png)
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解答题-证明题
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适中
(0.65)
【推荐2】如图,
是
的外接圆,点
在
上,
,点
是垂足,
连接
.
![](https://img.xkw.com/dksih/QBM/2011/12/5/1573295959465984/1573295989334016/STEM/a767fffaffca4b3dbd1cbd6d0b96cf16.png?resizew=152)
求证:
是
的切线.
若
的半径为10cm,∠A=600,求CD的长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42798067d911f96e5784cb138319c907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760ee0eebac09d8db071995727bf383e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da958f4e18c9846f59562c7ac2cc9c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://img.xkw.com/dksih/QBM/2011/12/5/1573295959465984/1573295989334016/STEM/a767fffaffca4b3dbd1cbd6d0b96cf16.png?resizew=152)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】二次函数
的图象经过
,
两点.
(1)求
,
的值;
(2)设这个函数的图象与
轴的正半轴的交点为
,顶点为
,求
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358e2987096a67189bcc2a642da39524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51116e96f4c35d90677e91e0aa914111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d8638349bba38af6d6d53a55634626.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)设这个函数的图象与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fa7fbc7b988629b037c04c4c3ce4678.png)
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名校
【推荐2】已知:如图,
在平面直角坐标系中,
.若
的长是关于x的一元二次方程
的两个根,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/5fa25863-fd5d-45f8-855e-c417f438c8e0.png?resizew=186)
(1)求
;
(2)若E是x轴正半轴上的一点,且
,求经过D、E两点的直线的解析式,并判断
与
是否相似,同时说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f47ddc7c9fb41942160e3cafcf756776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dac77366c746161a381e0589d63e451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66c7a677b9230fe19d301828469ef1f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/5fa25863-fd5d-45f8-855e-c417f438c8e0.png?resizew=186)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d54d09ef825305de83671448a3dea21.png)
(2)若E是x轴正半轴上的一点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a0689c52bc86ad98484da2d4265a852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd5a1e516644950ef35eafd859b262f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372629a8666de1e9bac3e7daadcac7b6.png)
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