名校
解题方法
1 . 在
中,
,
,
,
,则
的最小值为______ ,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284a563413dc0532138fb2a64db8cc2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6741e23953ab20244bebcab631689e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb825053b6b0576cd5c34f0a3ce20726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0805287e2bd7aaf9a7eacf5bca06c0e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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2020-11-29更新
|
621次组卷
|
3卷引用:河北省张家口市2021届高三上学期第一阶段检测数学试题
名校
解题方法
2 . 已知向量
,
,其中
,
,且
,则向量
和
的夹角是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da032e305b3ad38754e2d52b8ca086bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34fa8ea29001bb1f0c1e5157aff2fca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a6cb4dd98629b02ede38e4ebe185162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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2020-09-06更新
|
2891次组卷
|
6卷引用:河北省承德市双滦区实验中学2022-2023学年高一下学期5月月考数学试题
3 . 已知非零向量
,
满足
=
,
,
.若
⊥
,则实数
的值为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e6fd8641216bb14da546371b8528296.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be678a969afd1eb7be0d9845a85fcbca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fafb8d7f60f9f90f4afe90484e7dcc3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/801d2f38dd1af1591a7c0de7802af044.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/847febb1505f16c932e1e470b83c073c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333bf773f114b48e6cc17a3e9260b8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be678a969afd1eb7be0d9845a85fcbca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b05328a4bab1d1170dbe05146e17f906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2020-08-10更新
|
857次组卷
|
7卷引用:河北省衡水市武强中学2022-2023学年高一下学期3月调研数学试题
河北省衡水市武强中学2022-2023学年高一下学期3月调研数学试题陕西省西安市长安区第一中学2022-2023学年高一下学期3月第一次教学质量检测数学试题2019届北京市中国人民大学附属中学高三考前热身练习数学(理)试题北京市人大附中2020届高三(6月份)高考数学考前热身试题湖南省长沙市长沙县实验中学2019-2020学年高一下学期期末数学试题(已下线)专题12 平面向量-2020年高考数学母题题源解密(北京专版)(已下线)6.2.2 平面向量的数量积(精练)-2020-2021学年高一数学一隅三反系列(人教A版2019必修第二册)
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4 . 在平行四边形
中,
,沿
将四边形折起成直二面角
,且
,则三棱锥
的外接球的表面积为________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09ceef47dfdbdb1b586806fa27271d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1854ba6cc92481d7a616bd2788a47e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/025c72d6107014e82fb6586ab15637a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
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2020-01-12更新
|
430次组卷
|
3卷引用:河北省石家庄二中2019-2020学年高三年级上学期12月月考理科数学试卷
河北省石家庄二中2019-2020学年高三年级上学期12月月考理科数学试卷2020届安徽省六安市第一中学高三下学期3月月考数学(文)试题(已下线)2020届高三3月第01期(考点05)(文科)-《新题速递·数学》
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5 . 已知双曲线
:
(
,
)的右焦点为
,
,
是双曲线的一条渐近线上关于原点对称的两点,
且线段
的中点
落在另一条渐近线上,则双曲线
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73208b953bca534767ac8ad7bf82ef8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2020-01-06更新
|
329次组卷
|
3卷引用:河北省张家口市2019-2020学年高三12月阶段检测数学(文)试题
名校
6 . 已知向量
与向量
的夹角为120°,若向量
且
,则
的值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54f75b7355385622fb50aa2afe2f3581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eecb5b7834d4e129a9cb73dd248b3f83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a61843ca0226e572bc223b9016ce72f.png)
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2019-11-14更新
|
382次组卷
|
6卷引用:河北省大名县第一中学2018届高三上学期第二次月考数学(文)试题
7 . 已知向量
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98819ca00ee5e5b8dd439bfa182bc233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d98839a01220a7142b8af1db8cfa1cac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb58883caf5c8ca1e94389839d294b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
您最近一年使用:0次
8 . 已知向量
,
,若
与
垂直,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47deef0274b0ab2da8ec7c1e22bf50a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb0b6f8071090e4893c9a63e10e0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4a4b7619661850b2f3d62aed3b8d34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
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2018-08-24更新
|
781次组卷
|
5卷引用:河北省石家庄市辛集中学2020届上学期高三9月月考数学(文)试题
名校
9 . 已知平面上有四点
,向量
,
,
满足:
,
,则
的周长是_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7147ca48d60f169fab98d1f8aa3287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dfde0038de382d2be9701cea23ef7eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/329fdf7d989f77a32ca9e0361a9cc956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4407c0b2e5febf70f610bd00067f105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533aec812673c602f025e1a52b9c60ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4086e4c624c2640938fc63534f9ec73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2018-11-09更新
|
3558次组卷
|
2卷引用:河北省衡水中学2019届高三上学期三调考试数学(理)试题
10 . 已知非零向量
的夹角为
,且
,若向量
与
互相垂直,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d194ecefc9101001d88d3cc0bc9d6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/706bdcf382ddb9c0e988956832b10a4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db169c71a8aa10e8cbf59f1674e6c913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e624897fb5ca472e9fae6a779da86af0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
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