2022高三·河北·专题练习
1 . 在
中,
,非零向量
与
满足
,可判断
的形状为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be64d59ac6538a0f4d79fb825e082081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b03c4dc69182b092d73322c9c2c1699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2022高三·河北·专题练习
解题方法
2 . 在
中,已知向量
与
满足
且
,则
为___________ 三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be64d59ac6538a0f4d79fb825e082081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff530c13d5ff1a4c43808aaed7201fba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ae38505b2d8a049e21e9b9a94e121c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2022高三·河北·专题练习
解题方法
3 . 在
中,下列命题中正确的有:___________
①
;
②若
,则
为锐角三角形;
③
是
所在平面内一定点,动点
满足
,
,则动点
一定过
的重心;
④
是
内一定点,且
,则
;
⑤若
,且
,则
为等边三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3856445d7e0aa0c9217b7e4e2b06fa.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c44fde570691e96cd16e464f87d8d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
③
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4bb04eebbe6024fcc314f06a3576e72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52e0e42e9fe3670fa7db67621f94ec18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
④
![](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/b1ccde2c7ad18e7feafed3135b17210c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/806a88935fd1de6903781813078956a8.png)
⑤若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f9f040cf708479e91389b9bfb19747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ad9ab991d2f3f32957c5a5d7a7653d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解题方法
4 . 在
中,内角
,
,
的对边分别为
,
,
,且满足
.则角
的大小为__ ;设
为边
上一点,且
,
,则
的最小值为__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.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/9dc0bd35c34b1f5e97d3a53e3de58021.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/5ecb138a844ef11bb3214cff0a475c9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb08f6a798dc293f3d8de281190f65e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf586f28e8fbdd8c30227f60d1aba660.png)
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2021-09-29更新
|
395次组卷
|
7卷引用:专题8.2—平面向量—数量积的最值问题—2022届高三数学一轮复习精讲精炼
(已下线)专题8.2—平面向量—数量积的最值问题—2022届高三数学一轮复习精讲精炼(已下线)2022年高考押题预测卷03(浙江卷)-数学河南省九师联盟2021-2022学年高三上学期开学考试(老高考)理科数学试题河南省商丘市部分学校2021-2022学年高三上学期9月份开学联考理科数学试题陕西省咸阳市武功县2021-2022学年高三上学期开学摸底考试理科数学试题浙江省台州市、永康市六校(三门中学、黄岩中学、温岭中学、天台中学、台州中学)2021-2022学年高三上学期11月期中联考数学试题河南省信阳市第二高级中学2021-2022学年高三上学期开学考数学理科试题
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5 . 在
中,
,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
______ ,延长
交
于点
,点
在边
上,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209377196940bffa8ffa5f55b9c59fb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebe282a1a22740950ca3864cae92cee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbadb3ed201c6d131a404cc5b26349e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f44903f2fa6145de8f4de0b487fc043.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f02ca2195ddeb1592bdf9ab8e91d8c7b.png)
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2021-09-11更新
|
2627次组卷
|
10卷引用:专题8.1—平面向量—数量积—2022届高三数学一轮复习精讲精炼
(已下线)专题8.1—平面向量—数量积—2022届高三数学一轮复习精讲精炼(已下线)专题8.2—平面向量—数量积的最值问题—2022届高三数学一轮复习精讲精炼(已下线)2020年高考天津数学高考真题变式题11-15题天津市和平区2022届高三下学期一模数学试题(已下线)高一数学下学期期末精选50题(压轴版)-2021-2022学年高一数学考试满分全攻略(人教A版2019必修第二册)天津市西青区杨柳青第一中学2021-2022学年高一下学期期末适应性测试数学试题天津市第四十三中学2022-2023学年高三上学期期末数学试题(已下线)专题01 平面向量压轴题(1)-【常考压轴题】天津市四校联考2020-2021学年高一下学期期末数学试题天津市第二南开学校2022-2023学年高三下学期开学学情调查数学试题
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解题方法
6 . 已知
,则
与
的夹角的余弦值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957f4141183a3a6c517e5aa3183d1121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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2021-08-30更新
|
325次组卷
|
3卷引用:专题8.1—平面向量—数量积—2022届高三数学一轮复习精讲精炼
(已下线)专题8.1—平面向量—数量积—2022届高三数学一轮复习精讲精炼河北省定州市2020-2021学年高一下学期期中数学试题黑龙江省嫩江市高级中学2021-2022学年高三上学期9月月考数学(文)试题
7 . 已知菱形
的对角线相交于点
,点
为
的中点,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6084d16b22ec98dab00ecbbcc1c390.png)
___________ .
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6084d16b22ec98dab00ecbbcc1c390.png)
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8 . 已知向量
,
满足
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e47315c53c61d888744377e45fc50c.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd18461fd9d77e6fa46a654f0ab540f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61f1b1d236c77645c4a610c7c45a0b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/590948748bfb1cf360f2eef61c491e7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e47315c53c61d888744377e45fc50c.png)
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9 . 已知正方形
边长为1,E,F分别是线段
、
上的动点,则
的最小值是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7eaa3dcef6230edbceac39df210c21c.png)
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10 . 若M为
所在平面内一点,且满足
则
的形状为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69014227d1f83707e93c2620a9bcab56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2020-08-26更新
|
311次组卷
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5卷引用:专题8.3—平面向量—利用数量积判断三角形的形状—2022届高三数学一轮复习精讲精炼
(已下线)专题8.3—平面向量—利用数量积判断三角形的形状—2022届高三数学一轮复习精讲精炼(已下线)专题9.6 向量的应用-重难点突破及混淆易错规避(苏教版2019必修第二册)山西省忻州市第一中学2019-2020学年高二下学期期中数学(文)试题(已下线)8.1.2向量数量积的运算律练习(1)(已下线)6.4.1-6.4.2 向量在物理中的应用举例(分层练习)-2020-2021学年高一数学新教材配套练习(人教A版2019必修第二册)