解题方法
1 .
为
的外接圆,弦
,则
的值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/035a30934efcc920fd9ad5deb0bc83ac.png)
您最近一年使用:0次
名校
解题方法
2 . 已知两个单位向量
的夹角为
,
,
,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/116e2e7116a7b5cd0a912ec0699ca017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d904c6291cf3cf804746a60d246d510a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eaa0ceb7550157e793f764984139119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
您最近一年使用:0次
2021-10-14更新
|
272次组卷
|
4卷引用:云南省玉溪第一中学2021-2022学年高二上学期第一次月考数学(理)试题
名校
解题方法
3 . 已知平面向量
与
的夹角为
,
,
,则
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/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e36efb4b49b490e284bddaf75669939e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/939d364958e2d8051f03f5ce7a3c1531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9441d59d8cbe117c92f73a29c463d345.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-10-09更新
|
1637次组卷
|
6卷引用:云南省楚雄市天人中学2021-2022学年高二(A层)10月学习效果监测数学试题
名校
解题方法
4 . 已知向量
与
的夹角为
,
,
.
(1)求
的值;
(2)求
的值.
![](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/231b861d6d1f1d0b9f52b041cb40eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9936a46cc891744d4600f76bb92b694c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082c6926889f84f438ea35f70bf05f02.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4bd9b8cc54822fbea2ac8d72a3ec2c1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/208683a5ffda4cbc3ecfb41a4b0863ee.png)
您最近一年使用:0次
2021-09-15更新
|
425次组卷
|
6卷引用:云南省峨山彝族自治县第一中学2021-2022学年高二9月月考数学试题
解题方法
5 . 已知单位向量
,
满足
,则
与
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98729dede954877bef4668f1b0a4f906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/713eb2a72f8f690b71f27ec93ff40a34.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
21-22高二·全国·课后作业
解题方法
6 . 若非零向量
,
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/c05f1d68b133c5d2f76a06186e0ffb08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8483f9ada5bebdf9f34b5d28b9452bfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
A.30° | B.60° | C.120° | D.150° |
您最近一年使用:0次
2021-09-13更新
|
1055次组卷
|
6卷引用:云南省楚雄天人中学2022-2023学年高二上学期9月学习效果监测数学试题
云南省楚雄天人中学2022-2023学年高二上学期9月学习效果监测数学试题(已下线)课时1.1.2 空间向量及其运算(02)空间向量的数量积运算-2021-2022学年高二数学同步练习和分类专题教案(人教A版2019选择性必修第一册)人教A版(2019) 选择性必修第一册 过关斩将 第一章 空间向量与立体几何 1.1 空间向量及其运算 1.1.2 空间向量的数量积运算(已下线)6.1.2空间向量的数量积(2)(已下线)专题1.2 空间向量的数量积运算【五大题型】-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)新疆维吾尔自治区喀什地区巴楚县2023-2024学年高二上学期9月月考数学试题
名校
解题方法
7 . 在
中,
,
,
,点
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d3a7e3355ee508b11f19c15e28dfeab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36defd936f1972328e216be27439331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61557cca4e2f97defc23aeb18b13f724.png)
A.0 | B.2 | C.![]() | D.4 |
您最近一年使用:0次
2021-09-11更新
|
199次组卷
|
7卷引用:云南省玉溪市玉溪第一中学2019-2020学年高三上学期期中数学(文)试题
解题方法
8 . 已知在
中,
,
,动点P位于线段AB上,当
取最小值时,向量
与
的夹角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c20e5e01e88591113257c46fe308ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f125783c4f9d422f8ac6caebac164f6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d956b09c004ddf8bdf6669a8182e80ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/159557bc22c8f06441e597a18fa7ebfb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-09-06更新
|
178次组卷
|
2卷引用:云南省永善县第一中学2021-2022学年高二开学考试数学试题
解题方法
9 . 已知
=6,
=2,且向量
与向量
的夹角为600,则
·
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8458b5ecb0adadc1c53bb47743d8d2d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a730b84208efe337ee937ad7509d222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1569624d4ddf1ece02d92877c58858d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2115256b87190f5f31211515fb8ce8a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1569624d4ddf1ece02d92877c58858d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2115256b87190f5f31211515fb8ce8a0.png)
A.6![]() | B.12 | C.6 | D.6![]() |
您最近一年使用:0次
名校
解题方法
10 . 在菱形
中,
,
,设
,
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f550d33a4813211cbed34fb6823ac66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894a5a26219e12f21726dc8348893c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870fea4135ad550ada0a311cb681db54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797453f935a3f4d4adb8b991e8b00e08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2734f5e5a37418dc96dffadc83143994.png)
A.![]() | B.![]() | C.![]() | D.0 |
您最近一年使用:0次