名校
解题方法
1 . 由二维平面向量可以类比得到三维空间向量一些公式,比如若
,
则
,
等.非零向量
,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ab55ce496dc3dfdf3f0c459ccf49cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f39c662a3927de39135c3eee4b9cb68f.png)
.若
,
,则与
、
向量垂直的单位向量的坐标是(写出一个即可)___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a307b12e769bfe3794cf384acb5158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4399696c04b39a19df36fbbfeb40857a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3df747d55394252a5d77e2bc0d843abc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ee42162824141eda41d37e3c053e39b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/116e2e7116a7b5cd0a912ec0699ca017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ab55ce496dc3dfdf3f0c459ccf49cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f39c662a3927de39135c3eee4b9cb68f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39d1d88189726ae99c309644fca3494.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fbb6bff810cd8f8694592d32936e0dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b53dacec127f88f88afed63959259e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
您最近一年使用:0次
2024-03-23更新
|
111次组卷
|
2卷引用:江苏省淮安市金湖中学,清江中学,涟水郑梁梅高级中学等2023-2024学年高二下学期4月期中数学试题
名校
解题方法
2 . 设三个向量
不共面,那么对任意一个空间向量
,存在唯一的有序实数组
,使得:
成立.我们把
叫做基底,把有序实数组
叫做基底
下向量
的斜坐标.已知三棱锥
.以
为坐标原点,以
为
轴正方向,以
为y轴正方向,以
为
轴正方向,以
同方向上的单位向量
为基底,建立斜坐标系,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb4f795474089c4ca5183f0b8c8210d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d685c54089867c395a4c49ba01b1237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/977e7b03370104a3b2a99d7b2fc207e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f263fe996c25f0e231e27d2be0262275.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d685c54089867c395a4c49ba01b1237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82421141d6bb7a2f079659984133fe23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6592338e3a40aeb3f59f6817aad98899.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7239b3f2d88c2e45e17e5de9ae1a332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d6c690993b231b20c7a969178e5c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7972794bf959560d01203713beeb5b08.png)
A.![]() | B.![]() ![]() |
C.若![]() ![]() | D.异面直线AP与BC所成角的余弦值为![]() |
您最近一年使用:0次
2024-04-01更新
|
164次组卷
|
2卷引用:江苏省淮阴中学2023-2024学年高二下学期级阶段测试(一)数学试卷