名校
1 . 奔驰定理是一个关于三角形的几何定理,它的图形形状和奔驰轿车logo相似,因此得名.如图,P是
内的任意一点,角A,B,C所对的边分别为a,b,c,总有优美等式:
.
的内心,
,延长AP交BC于点D,求
;
(2)若P是锐角
的外心,
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6304b350f56f7ee6a0c51d9ece5ee7db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64edb981d2bd90d1dc58e9d140d3903d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219679f2c28a0418f62d9861b7aec02f.png)
(2)若P是锐角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2264c134952d41fb9bcb90e6c72c83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/568c6a1484da196de32bd04994d9d3d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
您最近一年使用:0次
7日内更新
|
501次组卷
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5卷引用:山西省临汾市名校联考2023-2024学年高一下学期5月质量检测数学试题
2 . 如图,在△ABC中,
,
,其中
,CP的延长线与AB交于点F.已知
,
,
.
,请用向量
,
表示向量
,并求
的值;
(2)若
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a64f1d0b5e4a6ebf4405b98a21a1ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b23b8ba897a7bbf4a9c0c3d6f6ecd89f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d2919e5bd26b5e9be672a3ff7604cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7ce899eaa74017eda8a8f3903c943e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0226b54b8c18c97505c9e2d8eeef2c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1371fe98a65d8ebd840c8d98346b6d15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1c3ea872a20fdc1843cb5ffce8a554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7239b3f2d88c2e45e17e5de9ae1a332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187634c24754b576ae8293665f45f89b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1795d8255d1235d98159322d4b0cda5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dd0ae3147ba748cafdac6c00ae77c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04af7d85462fc4f519090d5cbb8ae61.png)
您最近一年使用:0次
3 . 如图,在矩形
中,
,
,
,
,直线
与
垂直,垂足为点
.
的值;
(2)若
,将
用基底
线性表示,并求出
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea16ceca816f7d3d50650af141baf42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aea6b0ce9ca8f636e9a3ea69ea387bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24d89f662002b8265bf034c83be99d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e11c2b89f5505d3743dc061a1cb66ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfbcd67e8a5db670c426ed5bfec7f2fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce35858a2c32198e19bdea708ee02b8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c43cb446cbc4b695f94bc3405ddb8ccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91174b2336306191ba275a87864172b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6776bccbfb2f44e441f784145da677f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88b14123852c3e17f0a519282e076797.png)
您最近一年使用:0次
名校
解题方法
4 . 如图,在等腰梯形
中,
,
,点
为边
上靠近点
的六等分点,
为
中点.
表示
;
(2)设
为
中点,
是线段
(不含端点)上的动点,
交
于点
,若
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a68895db9b734487593646438653ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b7ae2f931da35ad6cd16e2dec974f12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae54940f33b8714da5fe3b7546f8b3dc.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61197405c5bc077c5944d0243310b2e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a14346c46472cf74b617fd26784b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b53351d85954737437000906554e8283.png)
您最近一年使用:0次
名校
5 . 设
是线段
的中点,
是直线
外一点.
为线段
上的两点,
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79e7cd59151397d14cffe4c191c5e380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47182836f477d710442499d08d100f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a733c4da39521e6684636342bb4919ae.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
6 . 在
中,角
,
,
的对边分别为
,
,
,点
,
,
分别位于
,
,
所在直线上,满足
,
,
(
,
,
).
是边长为3的正三角形,且
,求
;
(2)如图2,若
,
,
交于一点
,
①求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454845e47d30210e1052f288c04a3828.png)
②若
,
,
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05edc2270435e31e1c6246f2e73d319c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c730e8a8b00a42f640f47bdbe0ced2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b8c1e566d5c3d13d732e99b5214da8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1a609b7b505947a8a2f34fbed4b2208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d7ff5d48857835f5127cb41cd607bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc8047ecbb77a3c5f61ab430b2279f3.png)
(2)如图2,若
![](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/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454845e47d30210e1052f288c04a3828.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea1abafdbaa3ed5568822c52ee19af5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25ef5a4055fb0bac59cc504a71735417.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52dde258c86bc5af02e2eee95448d0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fab7aa572678c1776345bcb4d622393.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbff84327e964f912a54032e76ccc9.png)
您最近一年使用:0次
2024-04-23更新
|
745次组卷
|
4卷引用:福建省厦门第一中学2023-2024学年高一下学期第一次适应性训练(月考)数学试题
福建省厦门第一中学2023-2024学年高一下学期第一次适应性训练(月考)数学试题福建省厦门第一中学2023-2024学年高一下学期第一次适应性数学试题(已下线)模块五 专题五 全真拔高模拟(高一)(已下线)模块五 专题5 全真拔高模拟1(北师版高一期中)
23-24高一下·湖南衡阳·阶段练习
名校
解题方法
7 . 在平面直角坐标系中,向量
,
,正六边形
的顶点
位于坐标原点,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
__________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0719844e0261af3b625d9673e5926.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/250b7379a3204bf93637bf9969342038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f4745bed62792dd95b1152e6d3c862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bec6c52cc4257a144d598b8c4c99ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6322776c8af2641abdba552a91797bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0719844e0261af3b625d9673e5926.png)
您最近一年使用:0次
解题方法
8 . 如图,在直角梯形
中,
与
交于点
,点
在线段
上.
和
表示
;
(2)设
,求
的值;
(3)设
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54d3106f047d529703433b6dbad96fe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083a20abb668d4c26fe5039bd108b40a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89265cbe3abc6b966ce8967fead448b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf8f16f66227c7c9897bf5d5a863f78.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/015756e8dd84a004652163864e639d61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e785769901eda9d2f346462e228444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92bee4bf1aa98667dd4fe6d9bf18b3b5.png)
您最近一年使用:0次
2024-03-29更新
|
210次组卷
|
3卷引用:河南省创新发展联盟2023-2024学年高一下学期第一次月考(3月)数学试题
河南省创新发展联盟2023-2024学年高一下学期第一次月考(3月)数学试题贵州省遵义市遵义市四城区联考2023-2024学年高一下学期4月月考数学试题(已下线)第二章平面向量及其应用章末十六种常考题型归类(1)-【帮课堂】(北师大版2019必修第二册)
名校
解题方法
9 . 古希腊数学家特埃特图斯(Theaetetus)利用如图所示的直角三角形来构造无理数. 已知
与
交于点
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194ff7014ac137d916bb11e430c837c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76a1c30dd9f8080504a727abfb7fc567.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-08-30更新
|
1872次组卷
|
7卷引用:安徽省A10联盟2024届高三上学期8月开学摸底考试数学试题
安徽省A10联盟2024届高三上学期8月开学摸底考试数学试题(已下线)第6章 平面向量初步-【优化数学】单元测试能力卷(人教B版2019)(已下线)专题11 平面向量小题全归类(练习)(已下线)专题01 平面向量压轴题(1)-【常考压轴题】重庆市涪陵第五中学校2023-2024学年高一下学期第一次月考数学试题河南省信阳市新县高级中学2024届高三考前第一次适应性考试数学试题重庆市部分学校2023-2024学年高一下学期5月月考数学试题
10 . 在
中,
,
,若D是AB的中点
,则
;若D是AB的一个三等分点
,则
;若D是AB的一个四等分点
,则
.
(1)如图①,若
,用
,
表示
,你能得出什么结论?并加以证明.
(2)如图②,若
,
,AM与BN交于O,过O点的直线l与CA,CB分别交于点P,Q.
①利用(1)的结论,用
,
表示
;
②设
,
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e923e4cdcbea6a029f5ba188a59229d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb95d089784702a0b6d459f18a4e1e72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0997b1534ce4817fdc86c4b6c75db29d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2634228ecbd45ba775dca73eaf1cc63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bdd1229d9e121bc3bdb2339e76f3e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda838437dab97586710b6220ee74dcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075e483c30716072375e7db13e84ad07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1030db2fcd7b8f3f0eae7eb063fb7cba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/28/1e3da6d3-e471-4d60-901e-c428805cbbdb.png?resizew=379)
(1)如图①,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b83647557c93d7f7e9ceee524601a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1070a28cb9cb8553c29747d1993b16.png)
(2)如图②,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee5388f2e85a72e2414928ff69e0fd13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1cd8790d5f3cc008befd52e46f42001.png)
①利用(1)的结论,用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0260317a23090e4a019f76ae08614f5.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c85b08638081ff0c9651e4ca5792669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e8454ef2c08a243be83057c34de2f0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b7e12253044b5abff2a56dcd730ced8.png)
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