解题方法
1 . 已知向量
与
是非零向量,且满足
在
上的投影为
,
,则
与
的夹角余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3143307ad0ba4a631eac04e814993655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68f1ca48b024b9ea5dc5a2f708967dc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4c5090e792f2bc5057182bd97eb5508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知向量
,
,若
与
垂直,则非零向量
的坐标可以是________ .(写出一个即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f4dcf415977dea53f52a85b6b82136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c16461cd6d88ecaaafbe61ce0c4edcd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
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解题方法
3 . 冰球运动是以冰刀和冰球杆为工具在冰上进行的一种相互对抗的集体性竞技运动.同学小张在冰球训练的过程中,以力
作用于冰球,使冰球从点
移动到点
,则
对冰球所做的功为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f629c60deb93804be108dc4b70a686e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0898eaf39239999c25447d0512c95f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2442a318b33a4ee99ca57009c9a2ad1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f120d1660cf97c64d01e699f92faa80.png)
A.![]() | B.![]() | C.17 | D.10 |
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解题方法
4 . 若向量
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d88a341c90d865e666a70fc567007f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a916bf4a3654420d10b50e260d659788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d76ee2e81f447f84a3e0b39c0388ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-05-19更新
|
356次组卷
|
2卷引用:甘肃省白银市2023-2024学年高一下学期5月阶段性检测数学试题
5 . 已知
,则向量
在向量
方向上的投影为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb9cc7937406c1d377d72501b321d187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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解题方法
6 . 如图,在边长为4的正方形ABCD中,M,N分别为线段BC,DC上的点,且
,
,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e5c289b8aabdbfba95c7fd1e1842f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2650fce45eabd6d607e8eae70db4aa5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e6f0e94393fc6bbd9b4b83ede534ac.png)
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解题方法
7 . 对于数集
,其中
,
.定义向量集
.若对于任意
,存在
,使得
,则称
具有性质
.定义向量集
的子集
,若存在不相等的向量
,
,使得
,且
具有性质
,则称
为“向量伴随数集”.
(1)已知数集
,请你写出数集
对应的向量集
,并验证
是否具有性质
;
(2)已知数集
,请你写出数集
对应的向量集
,并验证
是否具有性质
;
(3)若
,且
具有性质
,写出
的值(不需要写出解析过程),并说明
是否为“向量伴随数集”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4622c700325a90d453e6300b886a8e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0bc1a0bba5e6e8ddf6f1f60f78e6490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e167b43045b3297248e334c41c621b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a06afe8164aec980706619a76d95a94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec1c65f144bd63ed516e001e57852de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f923fcc615e579b8dda937faa9fa40c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01243e3fb9bd7a7711a593f5395b06cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c81b7fb5dd67b43f4f736b55b613bd9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d344174267f996c7cefecfd6985d380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f7c2c3542cb509aa5e6ebc25c3f760.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31de844c7625d3b7de01abfcd0ea09fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(1)已知数集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf924cf5dacb13f5373cdda07934ded2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/096b1ece1dcd29c59a46a4b3e02cb548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/351bb3f3c54604330fa5b6c2bc3a7502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/096b1ece1dcd29c59a46a4b3e02cb548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)已知数集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7cfe811d59fa7d0ae36515495bcc495.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5031a3a951c4a1d1c5e9f80a5e26513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177b7f56650f15cdcabd287ee39554d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5031a3a951c4a1d1c5e9f80a5e26513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/226930767b46a7d01130d711c4f63479.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105ed89795469b32ec6b9a5e1ffe8233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1bbb0a939ec3c2d0414c2351f93ae5f.png)
您最近一年使用:0次
名校
解题方法
8 . 如图,在
中,
,
边上的两条中线
,
相交于点
,且
,
,
.
的大小;
(2)求
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea781ea1e67e42f1ab59768615a3172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a973f7b8e6acbd272a931d750d48b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45a8a837c11c07073da3ff751d70278.png)
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解题方法
9 . 已知向量
,
的夹角为
,
,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.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/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e310702748855c3edccd151aae0143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed7444ed9ccdd2dc5ac13be29f40fc68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb9ee73e05c2ea6a4b937b7ff42ac925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ef2b20e067d1865108bdb4ac7c1095.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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解题方法
10 . 若△ABC的内心与外心分别为N,O,且
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
A.![]() |
B.点N到AB的距离为![]() |
C.向量![]() ![]() ![]() |
D.![]() |
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