解题方法
1 . 已知向量
求
(1)
在
上的投影.
(2)若
且
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe8a71c52780d835b3e2152368ca496a.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1177f216c2b9e4bb5dbfe2d10589cf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbfb89dadc6b3afe3a7880583db0d88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2023-04-15更新
|
391次组卷
|
2卷引用:第二章平面向量及应用综合测试-2021-2022学年高一下学期数学北师大版(2019)必修第二册
解题方法
2 . 已知
,
,
.
(1)求向量
与
的夹角
;
(2)求向量
在
方向上的投影的数量.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ae0d7b3266f32b6a916b6237b6b838.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf342e77c56e55a35bb1151bc215a3a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f87bd4adfd5729e18c31763dabc7179a.png)
(1)求向量
![](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)
(2)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd8bbf47b69bbd7a6263b041290d11.png)
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名校
3 . “方舱医院”原为解放军野战机动医疗系统中的一种,是可以移动的模块化卫生医疗平台,一般由医疗功能区、病房区等部分构成,具有紧急救治、外科处置、临床检验等多方面功能.某市有一块扇形地块,因疫情所需,当地政府现紧急划拨该地块为方舱医院建设用地.如图所示,平行四边形OMPN区域拟建成病房区,阴影区域拟建成医疗功能区,点P在弧AB上,点M和点N分别在线段OA和线段OB上,且
米,
.记
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/6/d15be75f-ef1f-4451-9c73-ee1e6ebe4898.png?resizew=173)
(1)当
时,求
;
(2)请写出病房区OMPN的面积S关于
的函数关系式,并求当
为何值时,S取得最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88065e78982ab8a8b15bf573ca21476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc790cfaa59a808c25a7edb95dc29fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259728433d68902065408fb6a34c6d4d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/6/d15be75f-ef1f-4451-9c73-ee1e6ebe4898.png?resizew=173)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905dd10639c9fef5ef8d66a124756140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7db9b4ac9106bfaf32eba6ae265872b.png)
(2)请写出病房区OMPN的面积S关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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2023-04-05更新
|
993次组卷
|
4卷引用:山东省青岛市青岛第二中学2021-2022学年高一下学期期中数学试题
解题方法
4 . 设平面三点
,
,
,
(1)试求向量
的模;
(2)若向量
与
的夹角为
,求
;
(3)求向量
在
上的投影.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cba284d675a3028d7a8d54f1f8ae70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9988951f970f0195a18cccc981e0d6fa.png)
(1)试求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0bcc4613fd45569da58cf4b427728e3.png)
(2)若向量
![](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/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
(3)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
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名校
5 . 已知向量
,
,
(
),其中
为坐标原点,且
.
(1)若
,求
的值;
(2)若向量
在向量
方向上的数量投影为
,且
,求
的面积,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5fdc7cc778ba59d10aa6a607a62a6c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bbcdda05263f5f3521698b54c3289d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b08277b28ba242ce84a27c06dfcb9edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ce64685821c3e55c07f151996ca8c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc05f40eb2357f219d31bd2ea8e785f7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4046de89a756c5347a80971cc2b2d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/628560d39eeb0339fa00c9c15ab2c095.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a85504daf1129e372b3db4f704dbf8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
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名校
解题方法
6 . 已知圆
的圆心坐标为
,且圆
与直线
相切,过点
的动直线
与圆
相交于M,
两点,直线
与直线
的交点为
.
(1)求圆C的标准方程;
(2)
是不是定值?若是,求出这个定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99a345a7eb70e98a5b371f74d643a1cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求圆C的标准方程;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a07d7455629b233a951c95af934289.png)
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解题方法
7 . 已知向量
,
,向量
在
上的投影记为
.
(1)若
,求
的值;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2e05a672dff1649dec580a58806a67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6350b55503a84536da8a8b4f7b602042.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c8feca6e03d79ad46b8e7ecc524f4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bee52afcd6342b308b8677c424d5ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7d8b42c85013ba07ba18e5e46d8716.png)
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11-12高一下·安徽蚌埠·阶段练习
名校
8 . 已知
,
,且
与
夹角为
求:
(1)
;
(2)
与
的夹角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/145a7e8f352fab613b773dc6639b508b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34fa8ea29001bb1f0c1e5157aff2fca5.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/335e93a1fa4ebf362539196aa1c75f17.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30932bf30776f5f5882a29a5c45df8e5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd8bbf47b69bbd7a6263b041290d11.png)
您最近一年使用:0次
2022-10-16更新
|
800次组卷
|
9卷引用:广东省梅州市兴宁市第一中学2022-2023学年高二上学期10月月考数学试题
广东省梅州市兴宁市第一中学2022-2023学年高二上学期10月月考数学试题第二章 平面向量及其应用 单元测试-2021-2022学年高一下学期数学北师大版(2019)必修第二册(已下线)2011-2012学年安徽省蚌埠三中高一下学期第一次月考数学试卷(已下线)2011-2012学年安徽宿松县复兴中学高一第二学期第三次月考数学试卷河南省项城三高2017-2018学年高一下学期第二次段考数学(B卷)试题安徽省芜湖市普通高中2018-2019学年高一下学期期中联考数学试题山东省枣庄市第八中学2022-2023学年高一下学期3月月考数学试题江苏省盐城市响水县灌江高级中学2022-2023学年高一下学期期中数学试题第一章 平面向量 章末测试
名校
9 . (1)已知空间三点
,
,
设
若
与
垂直求
;
(2)求向量
在向量
上的投影向量.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee141f4ee500454aa34cf9c66e90f29a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866aa11c73d426cc2efef37aebb39f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd0e3fb39a5261e0b7bcebebfb41f9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/626d4dce6afbcb5cad9824ca166ff59e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41960bbc66bdc3b28be0138f83f9de5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4beab4eeabedce4c70b4e5fe5a0a278a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55dcadb13e6586759a03965386ee5931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4957867e530ed8a3f4bbffbb43d61ff6.png)
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2022-10-13更新
|
229次组卷
|
2卷引用:黑龙江省齐齐哈尔市恒昌中学校2022-2023学年高二上学期第一次教学质量检测数学试题
名校
解题方法
10 . 在
中,角
所对的边分别为
,其外接圆的半径为
,且满足
.
(1)求角
;
(2)若
边上的中线长为
,求
的面积.
![](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/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41660434fc7910d9ee76d7feaaac8dcf.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2022-10-08更新
|
1747次组卷
|
4卷引用:湖南省常德市临澧县第一中学2022-2023学年高三上学期第三次阶段性考试数学试题