解题方法
1 . 在△ABC中,点D为线段BC的中点,点E满足
,若
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8eeca31b6ec56f02c3ca7969e098aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f733282601cb9ded3aa4cee47b1f335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
今日更新
|
10次组卷
|
2卷引用:陕西省铜川市王益中学2024届高三下学期高考猜题信息卷(二)文科数学试题
解题方法
2 . 已知
中,角
所对的边分别为
,
,点
在边
上,
,
与
共线,且
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53cafee8876caf291f9ccf15587a441d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c81db37ffd752551511cc94e11210c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d021a5c98388463d577675e58068aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f32efb6be9c1ef070aa84b61d4002d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f7d7e1f8065791fcb35f2b0a6e2c26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25b37f7c1030719fc4361339bf15d16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
A.2 | B.4 | C.![]() | D.![]() |
您最近一年使用:0次
3 . 在
中,
分别在边
上,且
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5113986d9507fc5015e71989831c128b.png)
______ ,线段
与
交于点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c51d7e525c9d495ad914ceedc0a9f4f6.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cca04b2a2b61d62a809776670a60c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f40a7a8385d537d169506a7997c54b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0627c5fbc080e858cea342516ec0f0df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5113986d9507fc5015e71989831c128b.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c51d7e525c9d495ad914ceedc0a9f4f6.png)
您最近一年使用:0次
解题方法
4 . 平行四边形ABCD中,点M是线段BC的中点,N是线段CD的中点,则向量
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a014dff8997c661055229de29c61cfc.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
5 . 如图,在梯形
中,
为线段
中点,记![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad3db4482aefec6096f01eff3062551.png)
表示向量
;
(2)求
的值;
(3)求
与
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a21b0914d305954a8715257bac30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad3db4482aefec6096f01eff3062551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d021a5c98388463d577675e58068aa7.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35a09d674624ff7a72fb45c9f2b295ca.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d021a5c98388463d577675e58068aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4781e3daa2c4e018ca0ae09bb56abc0f.png)
您最近一年使用:0次
名校
6 . 如图,在
中,
,
,
,
,
,
,
相交于点
,
的长;
(2)求
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7502eee6f33e8c940dec63ab6473c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17e7376fefe18d435f4adbb6226d7aef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c1e2e3171120aa9a932cfeb59c6d1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2edbd1aa951458ec8c30393d52d7789f.png)
您最近一年使用:0次
名校
解题方法
7 . 如图,在直角梯形
中,
,
,
,点
为
的中点,
与
相交于
.
时,求
;
(2)设
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408eed7212133b7810cba92b83a0ca75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.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/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcfb099bac50f0972fa1a2a58a0dcfd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/015756e8dd84a004652163864e639d61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
解题方法
8 . 在平行四边形
中,点
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa73452484de675b6d1a7d2abba1a447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/658ff9921ff96972b0fc95360bb0c65b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7日内更新
|
104次组卷
|
3卷引用:广西北海市2023-2024学年高一下学期期末教学质量检测数学试卷
名校
解题方法
9 . 在平行四边形
中,
是
的中点,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd27dd5543eabc922bdbe03eb5bfd496.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
10 . 如图,在
中,D是线段BC上的一点,且满足:
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37d8fa7cc2f222bfcd3d8d58345b596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ace1f0505dac8a8ea7bca12dc94eb41.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次