已知向量
,
满足
,
,令
,
的夹角为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e888ea14da893971e13858945bf0cd.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff56a8b6f7563d4c131f29d37296adc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2806239ca065db73a8448ee0e5793b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e888ea14da893971e13858945bf0cd.png)
更新时间:2022-07-12 21:54:07
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解题方法
【推荐1】已知
,
,
,若
,则
与
的夹角为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b8971218da25b50b02c3c1162bc2cb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b82c039297f51753f7a9e194307b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd934cfaccbbd2bef28acb7ca60d60cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775f29addbc3b964eecf1ed0f954c3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
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【推荐2】在平面向量
,
中,已知
,
,如果
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
________ ;如果
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.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/5463fb0b7d03747aa4d680620ca81be2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48ba39512661fe13661d74fbe25977c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81bfc2e52ca1d88667d5fee2307e28c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b19e9066e6ebe86de2108970c51a8b88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
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【推荐1】与向量
平行的单位向量为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6569e50f43b3d8645652ecc13b62066e.png)
您最近一年使用:0次
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解题方法
【推荐2】已知平面向量
与
的夹角为
,则
,
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___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf342e77c56e55a35bb1151bc215a3a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc917d64da67306bf0e9de423b137f4c.png)
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【推荐3】向量
在向量
上的投影是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aedaec4e632c9981ce15f49b3f736706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57dd19023adeb4ab9cf1488e14eaf6e0.png)
您最近一年使用:0次
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解题方法
【推荐1】已知向量
,
,则
在
上的投影向量为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/582957208ff5f010dfc4dc51055f70be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0070b574325f6e1d7e04c1c63c90b158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
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解题方法
【推荐2】已知
,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d769ab21af5365d3c00dc617375ce4.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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【推荐3】已知向量
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9afc7bfbc67ff08ae5380508d9ca746.png)
___________ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32a7a587705e2064c678ab5d8d6f5c0c.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc038d02f8c463d4102ac1d730408e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f93b3d4871d6e550524e5c17313aad9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9afc7bfbc67ff08ae5380508d9ca746.png)
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