已知平面直角坐标系中两个点坐标
,点
是
中点,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0772afc1878caa2efcc5e1db965a4c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceb14619766a80a3095ee4a79bb9166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a03a0f071f65a4d940c6c74f11d0cf3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
21-22高一下·吉林长春·阶段练习 查看更多[3]
吉林省长春外国语学校2021-2022学年高一下学期阶段测试数学试题吉林省田家炳高中、东辽二高等五校2021-2022学年高一下学期期末考试数学试题(已下线)专题2.3 直线的交点坐标与距离公式(6类必考点)-2022-2023学年高二数学必考点分类集训系列(人教A版2019选择性必修第一册)
更新时间:2022-04-11 15:46:58
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解题方法
【推荐1】已知
,
,其中
.满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7664325facff9aa69197a0bc658d19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff649aae32010d1bf7d4d98696f45cb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad21a359bfe10f76cea0edd36ac30b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7590a22611f3935d8e32eac956c2a4c1.png)
A.![]() | B.![]() | C.9 | D.22 |
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【推荐2】如图所示,设
是平面内相交成
角的两条数轴,
分别是与
轴正方向同向的单位向量,称此平面坐标系
为
斜坐标系.若
,则把有序数对
叫做向量
的斜坐标,记为
.在
的斜坐标系中,若向量
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46c092d69df76faf1e2133dc96b466ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d9c9451bf99a367f7f29991dc8ab4c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad59ee7969f2a082ed53bdf0aaa748ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2caf1e8d14ccc468862ad1b4ae29b6ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e723e57753f0a4fe1ef8ca1aee0e2117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e57a73431f93b1cf7fc1eca6cb79e248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905dd10639c9fef5ef8d66a124756140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b663859723c76d4a54216a40d950678.png)
A.![]() |
B.![]() |
C.![]() |
D.向量![]() ![]() |
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【推荐3】若向量
满足
与
的夹角为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de88b64bf0e55e10af49e9682cbe2afe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8768d5826995aeddbb4f2a977ee49910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3c6bd21d9c27a68b970f446f04d6df.png)
A.![]() | B.![]() | C.![]() | D.2 |
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【推荐1】已知平面向量
,且
,则
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf5dfa65246d719fcd531187ca3d9226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d76ee2e81f447f84a3e0b39c0388ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6f48d0d83360febc0194f237af9068.png)
A.2![]() | B.![]() | C.3![]() | D.1 |
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【推荐2】若平面向量
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/312f1d78f900703214df2e47b7638650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb58883caf5c8ca1e94389839d294b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c254cce91ec995a81f330953526ac4fd.png)
A.2或10 | B.2或![]() | C.2或![]() | D.![]() |
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