已知向量
,
,
,若向量
与向量
,
共面,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f822cbe2d0993fd04000d33c68b0a7a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fede89ef73bbd9cfaf1e40137fc90209.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced68a7f1379fde0eecc850f3797538c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.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/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-11-14 10:21:05
|
【知识点】 空间向量的坐标运算
相似题推荐
单选题
|
适中
(0.65)
名校
【推荐1】已知正四棱锥
底面边长为2,高为1,动点
在平面
内且满足
,则直线
与
所成角的余弦值的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b478fa72eaf85f91cc50c7e361e21d9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
解题方法
【推荐2】如图,长方体
,以
为坐标原点,分别以
所在的直线为
轴建立空间直角坐标系,点
是棱
的中点,点
是
与
的交点,如果
,那么三棱锥
的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1dd635cae84319a62ed68af58901b2.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a802fe485971ce41cfd33a6d1b6ad3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b12b4225feefa8be291f0ac73e539c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/12/1b331cde-c9e9-4141-92c6-2a836d4ee602.png?resizew=206)
A.2 | B.4 | C.6 | D.8 |
您最近一年使用:0次