在
中,
,
,则
与
的夹角为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/717071431a2d417fef3b74228ccedc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff73d6aaee840cb1bd0a81dcd92220c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f33a112e9728d7b560199765c815f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1070a28cb9cb8553c29747d1993b16.png)
更新时间:2018-08-09 14:43:11
|
相似题推荐
填空题-单空题
|
容易
(0.94)
【推荐1】如图所示,四边形ABCD是梯形,AD//BC,则
+
+
=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d792a2aa25763e14cc2863be3887000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
您最近一年使用:0次
填空题-单空题
|
容易
(0.94)
解题方法
【推荐2】如图所示,已知
到平行四边形的三个顶点
的向量分别为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8684cb9b193a5967e652116c9feaf531.png)
________ (用
表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96022a881e03e32d3483d997c3f170c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8684cb9b193a5967e652116c9feaf531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96022a881e03e32d3483d997c3f170c6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/ad1a8c86-f831-4aaa-a1a7-5ded559bb82e.png?resizew=253)
您最近一年使用:0次
填空题-单空题
|
容易
(0.94)
名校
【推荐2】已知
,则
在复平面对应的复数是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3931899a4b68bca2ba9d824c314c80a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59719064db2579c7479960ff3c1051cc.png)
您最近一年使用:0次
填空题-单空题
|
容易
(0.94)
解题方法
【推荐1】在
中,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d4995ec65d0748dfeedc9068e0a5f2c.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af2f502e92e09d86ecbbf93777781e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d4995ec65d0748dfeedc9068e0a5f2c.png)
您最近一年使用:0次
填空题-单空题
|
容易
(0.94)
解题方法
【推荐2】已知
的三边
三边中点依次为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c9286f3c7dfc702cf17605139e1c7fe.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb555dc8e602d43e9af495fa98a5002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927456b0989846a2f1573844bbaa2105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c9286f3c7dfc702cf17605139e1c7fe.png)
您最近一年使用:0次
填空题-单空题
|
容易
(0.94)
名校
【推荐1】已知
,
,
,则
与
的夹角是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ff236771f0108e56bfcb9139eededb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64b547b30a0496e4dacbbe83700a070c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65295f2f348b895fc73d5107b4066e2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
您最近一年使用:0次
填空题-单空题
|
容易
(0.94)
名校
【推荐2】已知向量
、
满足:
为单位向量且
,
,则向量
、
的夹角是______ .
![](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/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec1cc86b7ff004a6ab4f88b7af2d58da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4fea87bf0383b9a419d2af14b391ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
您最近一年使用:0次