1 . 已知平面向量
,
.
(1)求
的值;
(2)若向量
与
夹角为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388844fa8261916a753f1912993bd1a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/503fd5ca4c7948f7bcf158e62f667275.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3db87f99222f1705e122a6bd329c9f1.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0f5d6389672e98b7a226d86706c390.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67a5673958e175b00200a75e645c73c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290710d643ab6cd3b9edd73815b1d8ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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解题方法
2 . 已知
是平面向量,且
是单位向量,若非零向量
与
的夹角为
,向量
满足
,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a224ffb25cc28164e51763f5130754c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c984376f5475184e0d3e4f7e1bb65f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c984376f5475184e0d3e4f7e1bb65f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cefefd659d15c2cf0c6b88ba53af680.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09bf133b5a1cc2e97b988af7449efc06.png)
A.![]() | B.![]() | C.2 | D.![]() |
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3 . 如图,设
是平面内相交成
的两条射线,
分别为
同向的单位向量,定义平面坐标系
为
仿射坐标系,在
仿射坐标系中,若
,则记
.
仿射坐标系中
①若
,求
;
②若
,且
与
的夹角为
,求
;
(2)如上图所示,在
仿射坐标系中,B,C分别在
轴,
轴正半轴上,
分别为BD,BC中点,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46c092d69df76faf1e2133dc96b466ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a998a7d4d980e848ee050b706480ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad59ee7969f2a082ed53bdf0aaa748ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46c092d69df76faf1e2133dc96b466ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4446f654cf8401b640cc79c2b97af5db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4446f654cf8401b640cc79c2b97af5db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3def4278aef3c2c3aa64386584e5df65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1826aa6f667b181d7aabc06e35365308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4446f654cf8401b640cc79c2b97af5db.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b1fc6efbb1fe3d949bf100925cdf34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5455bdb43226a925e13da2df0f233be6.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c5b0bb8bf0236fde97d668f40fd404a.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/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
(2)如上图所示,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/479feca6887a5b30b7142c665cc61e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03da507737fe5b3211dc2953d6c971c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a462f4899d41997a8ce2df63d0056e4d.png)
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4 . 已知向量
,则下列说法错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05dac4a4e2312d36aba8e4224b15e3ab.png)
A.存在![]() ![]() | B.存在![]() ![]() |
C.对于任意![]() | D.对于任意![]() |
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5 . 已知向量
,
,
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4ce5bf6d859fb73061a6bd114a8268d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6097ea16d56cd90a3d2db8e855574f27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e34281318027f1d9d7cffd42d2cca8df.png)
A.若![]() ![]() |
B.设函数![]() ![]() |
C.![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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解题方法
6 . 已知向量
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afe51f706e674c6aed6dcd60aee79f50.png)
A.若![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.![]() |
D.若![]() ![]() ![]() ![]() |
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7 . 已知在平面直角坐标系
,向量
.
(1)求与
垂直的单位向量
的坐标;
(2)若向量
,且
与
的夹角为钝角,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a08ed47d6563ffa369eec7374cccffd.png)
(1)求与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc64abe49847ade9b78678ba1f8e0e2.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65bd2bc4e1a28a6ef13487447ea4747f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0be59eb3dc3d5ea7be8cd4add057470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83c5803cc8c05849028a57c4bd4ee72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2024-05-06更新
|
200次组卷
|
2卷引用:湖南省长沙市明德中学2023-2024学年高一下学期5月阶段考试数学试卷
名校
8 . 已知向量![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12bafc2c3b628a470bd7ad879939f898.png)
(1)向量
夹角的余弦值;
(2)若向量
与
垂直,求实数k的值;
(3)若向量
,且
与向量
平行,求实数k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12bafc2c3b628a470bd7ad879939f898.png)
(1)向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e163480714acc9dae5005cac65d217d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67a5673958e175b00200a75e645c73c.png)
(3)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2db3b9b5b833ffc875bfc5aae4c9e454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e163480714acc9dae5005cac65d217d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27560fc334ad1394f0965f60323bad02.png)
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2024-04-29更新
|
946次组卷
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2卷引用:江苏省金湖中学2023-2024学年高一下学期第一次阶段性考试数学试题
名校
9 . 在平面直角坐标系中,点
为原点,
.
(1)求
的坐标以及
的值;
(2)若
,且
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305ae9480d4bac4811a1de742a46972d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dff19c492923bb47ef54de071c27e8c1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/571b8a2416542301d1435a43a7de208e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e8e05917ce92f10501ee4b80d1edb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
10 . 已知向量
,
.
(1)若
,求
;
(2)若
,
,求
与
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/993e9681181da32d59da5aa14daa853a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecc2d0fb8a6b049073027ccfe1dce109.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c8feca6e03d79ad46b8e7ecc524f4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc23a04cdac6439ea170e799f1c1df5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/865aba38107ea2bd90913b0e781cb342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264dbca85f79593240eaea98bcb5ca6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a06c8eae3652486cf9e416ce3a8ffc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
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2024-04-24更新
|
744次组卷
|
4卷引用:广东省佛山市南海区南海中学2023-2024学年高一下学期第二次阶段考试数学试题