已知
,
,若向量
与
共线,则
在
方向上的投影为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf6d21b2a50c92f700511c9f86a7c9ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e18515948143068d8d652f349508e478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/204bbbb45bfea7fb972b8b1a6c28b958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af89864f1c909eef31ebbe3178c048a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b91254db5ff748150f449c5cdd256c.png)
更新时间:2020-03-23 20:10:50
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填空题-单空题
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较易
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解题方法
【推荐1】已知单位向量
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名校
解题方法
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