名校
解题方法
1 . 如图,已知平行四边形
的对角线相交于点
,过点
的直线与
,
所在直线分别交于点M,N,满足
,
,(
,
),若
,则
的值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328e8ec9120d4f382d63802421770a14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94afa7ff9090a58e4d6724f42bb6689d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef55d9a8935b98a1a1c273e35a165b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
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名校
解题方法
2 .
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f2a279009903bc931d5810302b51fb8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
3 . 已知
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f02f71d56bc8cbdedf11a99f95db22e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b7125338c8fda03f76c925bb595f81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec55e39f7906734f2dae8c5ef1888bd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-06-13更新
|
685次组卷
|
3卷引用:江苏省连云港市灌云县第一中学2023-2024学年高一下学期5月期中考试数学试题
名校
解题方法
4 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31440461c33e571203c01ff6405eaf18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c139d5171417289b39cfd4dff62cad0a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 根据《周髀算经》记载,公元前十一世纪,数学家商高就提出“勾三股四弦五”,故勾股定理在中国又称商高定理.而勾股数是指满足勾股定理的正整数组
,任意一组勾股数都可以表示为如下的形式
,其中,
均为正整数,且
.如图所示,
中,
,三边对应的勾股数中
,点
在线段
上,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e61df74eaab3fe801486caff95d72b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61d4d0a815d4976f0dd327d23fca2e4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4d7e68d0c8bd9a32d826c721ab74d9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7091d529281abff275ef19b9197445a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b51d3992644d37dc71c9b5a97d515c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7eabcf398837366b6d86c343b173690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eee1b37025a6aefdb2b636f988985c3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa6c3ea24743e594cc3b0fdd3877d88c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88f450e2e6f7dd951d9623e3c57e8f27.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-06-12更新
|
117次组卷
|
2卷引用:江苏省江都中学、江苏省高邮中学、江苏省仪征中学2023-2024学年高一下学期5月联合测试数学试卷
2024高一·全国·专题练习
名校
解题方法
6 . 若
是
所在平面内的一点,且满足
,则
的形状为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6aa00853330ee967b89073a4f21687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.等边三角形 | B.等腰三角形 | C.等腰直角三角形 | D.直角三角形 |
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名校
7 . 已知在
中,
是边
的中点,且
,设
与
交于点
,记
.
表示向量
;
(2)若
,且
,求
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42ee071eeac50f0aad26a5139fdf2a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7753d15caaa20b787e9d8923eba7bbcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b2f1f3c3a1e6f78e384193b1d07962.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d48cf5b1ac67763f9a763ad215019a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f288f8a6a042f8796f7ca620ecde791.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d8e6a59ae1aa48966ba5ea0e205f7b6.png)
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名校
解题方法
8 . 已知平面向量
,
夹角为
,且满足
,
,若当
时,
取得最小值,则
( )
![](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/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7c6e69895574db29f6326bd82f21e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404067afb19bd74f447a6c0c832af1da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9ca1759fe015f8b8eb441c9001e24ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2027974bcdb11897eddf5689a6b962c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96baee807c43e1a7b7feacf142813e8b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-06-09更新
|
524次组卷
|
4卷引用:江苏省宿迁市泗阳县实验高级中学2023-2024学年高一下学期第二次调研测试(5月)数学试题
江苏省宿迁市泗阳县实验高级中学2023-2024学年高一下学期第二次调研测试(5月)数学试题四川省凉山州2024届高三第三次诊断性检测数学(理)试题湖北省襄阳市第五中学2023-2024学年高一下学期5月月考数学试题(已下线)专题2 以平面向量数量积为背景的最值与范围问题【讲】(高一期末压轴专项)
解题方法
9 . 在平行四边形
中,已知
,
,
,点
在
边上,满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/359ddfad91ff2e81cb0c728c2c9edd4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d3aeaff6cb3820aa6339bcc1757180.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e440db7b01e80a2fe77255d493e83036.png)
A.![]() | B.0 | C.![]() | D.1 |
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解题方法
10 . 若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c8e6f7d2099684b9e4da51907e424f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2108d5118d0e28df06f1b12d8010d587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18ac2817c37f1e8ceaf0b2ad0719945.png)
A.![]() | B.![]() | C.5 | D.![]() |
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