2022高一·全国·专题练习
名校
解题方法
1 . 已知
,且
与
互相垂直,则
=___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d5cf43c9fb8e776d40f8e9ad5d4cf23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/713eb2a72f8f690b71f27ec93ff40a34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e624897fb5ca472e9fae6a779da86af0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85037a7822cd9642d0c08ca29d61b259.png)
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2 . 已知向量
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ece37ad3865609642a1f5c915bfa2d3c.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bfe4da6f357e55927d25d9d27ea8717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fdd737ea992d3ce1ccf078c29215d8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ece37ad3865609642a1f5c915bfa2d3c.png)
您最近一年使用:0次