1 . 已知向量
,其中
是互相垂直的单位向量.
(1) 求向量
在向量
方向上的投影;
(2) 设向量
,若
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9810d73c4b0a6cdfdbf50084e141c16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4868d6790066750d6fc1b361b41bf4.png)
(1) 求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
(2) 设向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb48be5bd8318b3d978851d2faffc86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d45632b3ca6ab6c0b05df0d5a838c375.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2019-12-17更新
|
356次组卷
|
3卷引用:上海市长宁区2018-2019学年高二上学期期末数学试题
上海市长宁区2018-2019学年高二上学期期末数学试题上海市闵行区2019-2020学年高二上学期期末质量检测数学试题(已下线)上海期末真题精选50题(大题基础版)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)
2 . 已知
,
,当分别满足以下条件时,求
在
方向上的数量投影.
(1)
;
(2)
;
(3)
与
的夹角为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4244dd3d11b8c8131ffecd896c12a27c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e6bb24babdedf3877c466aa8a0d76c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70facc9bc02af0867d248407bd317c05.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
(3)
![](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/be6a6301878fed2a01413020b27310a5.png)
您最近一年使用:0次
2021-03-25更新
|
158次组卷
|
3卷引用:沪教版(2020) 必修第二册 领航者 第8章 平面向量 8.2向量的数量积 第1课时 向量的投影
3 . 求函数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b0098edc95e29ceda63a06223d5a7c.png)
您最近一年使用:0次
2021-03-25更新
|
148次组卷
|
2卷引用:沪教版(2020) 必修第二册 领航者 延伸阅读
4 . 已知
,
,
.求:
(1)
与
的夹角;
(2)向量
在
上的投影.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf0b40ab957abd03f1db03ddf71242fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ace13ebf9148c275e0b1f0ac5f5b6b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ecf2a550853341e5cb63db700718b14.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
(2)向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
您最近一年使用:0次
2019-11-10更新
|
266次组卷
|
3卷引用:沪教版(2020) 必修第二册 领航者 第8章 平面向量 8.2向量的数量积 第1课时 向量的投影
名校
5 . 已知
,
是
的中点.
(1)若
,求向量
与向量
的夹角的余弦值;
(2)若
是线段
上任意一点,且
,求
的最小值;
(3)若点
是
内一点,且
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e46a4e894ae759de1877c4d24cd135fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87909c6df58fe648cd8daa2f662a260b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18acebeae8cc30bd05d6dfd5f0f2e737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e88bca29b1406f27f1913b7f25fb483.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff6beb20606e85d6ff7f155907da9aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721ed4ebca1b4223d382b6dc71ce0971.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a528f40cca3187bafc597fe2228d681.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8448f2cc52d0f48e3dcb5d44c4cead1e.png)
您最近一年使用:0次
2020-06-16更新
|
256次组卷
|
3卷引用:上海市华东师范大学第二附属中学2023-2024学年高一下学期5月质量检测数学试卷
名校
6 . 已知
,且向量
、
不平行,且
.
(1)若
,且
,求向量
在
方向上的投影;
(2)若
,且向量
与
夹角为钝角,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2436ceefe6943b41626fa5ac12aac45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a89a5eb11129579a45e1e550c73c9b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef66274206ee34d8732c08a729cdabb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7e3085830ecf4364b4a897f6e848fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba648b28ce3a5048531784efdb8195f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358d896d9eab84c6695ddc25196e6857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
7 . 如图,点
分别是角
的终边与单位圆的交点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/1615518f-692a-453c-a909-a57807ed2678.png?resizew=187)
(1)若
,
,求
的值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c44ad927dca1847d535e4d3b7fdf7860.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/1615518f-692a-453c-a909-a57807ed2678.png?resizew=187)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e6e786cf092be7473ed346780477ea1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6315bec7b40787760632a64a3bebdaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f407134cad46827104d6654d92db1198.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff8eb79da2ae1202feebf45ba5e795c.png)
您最近一年使用:0次
2020-02-04更新
|
207次组卷
|
3卷引用:2016届上海市闵行区高三上学期期末质量调研考试(一模)(理)数学试题
名校
8 . 已知圆
,
是
轴上的动点,
、
分别切圆
于
、
两点;
(1)若
,求直线
、
的方程;
(2)设
,用
表示
的余弦值,并求
的最小值;
(3)若
,试求直线
的方程;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3935dafafc5f643540f7dc493073af85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf25e032b5599ac49383de06e776365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf702adb116c1e46569eb7050d029f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdebfa07f9b53d79d119cd3a1048e78a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf25e032b5599ac49383de06e776365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf702adb116c1e46569eb7050d029f49.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe620edd929ceaa86a77ba94ccc8f166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c7bbe0ac1c88c9d35978a7184ba553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d40f399c3737563ed161f2b7326a8a.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8639d274ec7416566696dd81f7beaebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dca049735b45fb9b2533c68605eddc.png)
您最近一年使用:0次
名校
9 . 已知点
、
、
.
(1)若点
在第二或第三象限,且
,求
的取值范围;
(2)若
,
,
,求
在
方向上投影的取值范围;
(3)若
,求当
,且
的面积为
时,
和
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32366143230ca122894a4bada7c7b96d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24705e5759ac944559f305c694c9f6d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/091acaf5c3cbe20a5fff598323dc82be.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4af733c6432ce382a8a3fc19ef315ac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd84a8f95166367063218ee03ffd5a7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7556b085ed721d309c3376bf5e16ad21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1348dbdeba99934acf4cf5bc6b3bc5a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e36c9c91220b0f2cbd4a48e8fa90e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00da1c29aea46e36cda0f5780966bb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe35c91649a5bea2518387a2b36e0c0d.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b0b9a2c33a6b08e739435fc55e0f38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c747e93ed8de8ad9b477e9c08c84441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4201d3bead2e48cc80052b1418f23db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd84a8f95166367063218ee03ffd5a7.png)
您最近一年使用:0次
2019-11-13更新
|
246次组卷
|
2卷引用:上海市上海交通大学附属中学2016-2017学年高二下学期期中数学试题
名校
10 . 已知向量
和
的夹角为60°,且
,
.
(1)求向量
在
方向上的投影;
(2)若
,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b3c6023f3ebdd4dca0c57b323531e13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/861e49ff83900da40ec23f4dda9eab11.png)
(1)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d258ac8d5b19539a90f9d445ea4980e.png)
您最近一年使用:0次
2020-01-16更新
|
181次组卷
|
2卷引用:上海市七宝中学2017-2018学年高二上学期10月月考数学试题