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解题方法
1 . 设平面向量
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef1d4cc2603ce21654fdc997c2e7a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21072bebac1d19d20b42b2644a277173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/242b0af4f33851007b2052508dd3790e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
您最近一年使用:0次
2019-06-21更新
|
533次组卷
|
2卷引用:【全国百强校】湖南省衡阳市第八中学2018-2019学年高一下学期期中考试数学试题
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2 . 在
中,角
,
,
所对的边分别是
,
,
,若向量
,
,且
,则角![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26308ea6d8f321d27acbd7f9b131f9f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/649063c289bd194842e519a9901a0fe8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/691973f3b6518d32c1f0e2e0b45528d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9138d6193d51bfabab3857b2651e1518.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26308ea6d8f321d27acbd7f9b131f9f1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-05-27更新
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1372次组卷
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3卷引用:四川省大竹中学2018-2019学年高一第二学期5月月考考前模拟数学试题
3 . 向量
,若
,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7225c6294e05b9e3cf010af359c4f9b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53fc4559f5a896a760524d826c6c3ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-05-27更新
|
3729次组卷
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4 . 设
,向量![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d168f29910c364ad7e9c19ba09f419b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd87ad7c685c35b1edac8b5c18b49191.png)
且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf20d9e3b70df73ccf3aab8f347cdb67.png)
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/562c740265dc7f9d645f607777f093a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d168f29910c364ad7e9c19ba09f419b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd87ad7c685c35b1edac8b5c18b49191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f33db7822b032a60efd17b950aa9137d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf20d9e3b70df73ccf3aab8f347cdb67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/185f74bb470c0c77fafe422b6187a08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/562c740265dc7f9d645f607777f093a1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
5 . 已知向量
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264381e1a002b5be1a3f689160e93cef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/049d97e3544ef8587321514491443606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3854a1870df3dfab871bb1b15d41cb07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
A.1 | B.-1 | C.![]() | D.![]() |
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6 . 已知:
三点,其中
.
(1)若
三点在同一条直线上,求
的值;
(2)当
时,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/156f675593c4991e5b150a2aa91f84e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4c78214e43a8b93f2a57072033cbcf.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f292d11d9f5fc1a5e04118fb7de8a881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4083158087b388cdebe2ae795237da0f.png)
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2019-05-06更新
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7 . 已知向量
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84ca907e0f09b1c951cbbd728831b433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a683d9cd5f84e07bc351819d9dd96df4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
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2019-05-05更新
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8 . 已知向量
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c10526bc55cba08178c55c5dc4bfc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d76ee2e81f447f84a3e0b39c0388ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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2019-04-28更新
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9 . 已知向量
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e4d2bcf4cdaab2a07ddf3640bb7ffa.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa69a31bb7257e4143fe13009324d99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/796f0a8433f1055187e55fe42c0cadf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b978b8c5860419cb733d039659ec00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e4d2bcf4cdaab2a07ddf3640bb7ffa.png)
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10 . 已知向量
,
,若
则实数
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b31aebd84a09c58eda7b46872c553c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/897a9dd365a6110e1836fb5bc2219a7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b988d81f63ca329c85840e030f6505.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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