1 . 已知向量
,若
,则x的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30bf1f72ea5bf01b47dbbf9baa5a71a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
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2 . 已知
为圆
上三点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60bbfb3b293f74a652014328799cedee.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0ae8e92dd3119d41f2c830ea526516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df8184211deef4940ab50b048536351.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60bbfb3b293f74a652014328799cedee.png)
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2020-04-24更新
|
144次组卷
|
4卷引用:2020届全国100所名校高考模拟金典卷高三文科数学(八)试题
名校
解题方法
3 . 向量
,
,
,若
,求
=________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b6c8e915df5d4f9e8484db951282d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1d1fd8cd32e8f77cb4691b0b76dde7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e36c9c91220b0f2cbd4a48e8fa90e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43660b1543b3a2b46185f7629d28a963.png)
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2020-04-17更新
|
378次组卷
|
2卷引用:陕西省咸阳市武功县普集高中2021-2022学年高三上学期期末文科数学试题
解题方法
4 . 已知向量
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3317be998a617c4d5770f7fd4448097a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/151e497f2bc3ff9bd98885beb5174bc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
您最近一年使用:0次
5 . 已知单位向量
满足
,若
,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51bb6ab9287aa92135840ec1efbcf287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de9aad16d627df656a7d4c776a74275b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
A.![]() | B.1 | C.2 | D.![]() |
您最近一年使用:0次
解题方法
6 . 已知非零向量
,
满足
,且
,若
,
的夹角为
,则实数
的值为( )
![](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/9f1023f30fa98d29b2115ec617478104.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c1715cb7b1b5b90a6ebff36bddda764.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/9f785147690f83dcee0a0bc6c327e75a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-04-12更新
|
431次组卷
|
2卷引用:2020届江西省上饶市六校高三一模(4月)文科数学试题
7 . 若向量
,
满足
,
,且满足
,则
与
的夹角为( )
![](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/4f72d75e4d2e93642466347d12312cba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9535634cbf2870127a36a1a4ae92c6a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/487ed207b9795a377688a6ff56b1018d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 已知向量
,
,则
可以为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788fa471d53a8be8dd55f561aecbf99d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
9 . 已知两个单位向量
,若
,则
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/111939547e581e8bf029a241b9e9cb05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c9d5b1f7b5cf508c259e9de7940a0e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/111939547e581e8bf029a241b9e9cb05.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-03-10更新
|
911次组卷
|
5卷引用:2020届福建省福州市高三适应性练习卷数学理科试题
解题方法
10 . 已知
是两个单位向量,
. 若
,则向量
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1238a7a8ce9db1a47ae0ac80d5ed70cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efaeaedd9b32b3a1fcb970031d45cea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12976a4d92584494d1c2c714684d45b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1238a7a8ce9db1a47ae0ac80d5ed70cf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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