名校
1 . 在平面直角坐标系中,已知圆
,点A,B是直线
与圆O的两个公共点,点C在圆O上.
(1)若
为正三角形,求直线AB的方程;
(2)在(1)的条件下,若直线
上存在点P满足
,求实数n的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595ed1d6476d4f33a45b6ebf665be023.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)在(1)的条件下,若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f8b52b2f8f693789e25e15b4e6e5d32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4889b7400e12119839b3204a404c1934.png)
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解题方法
2 . 下列选项中正确的是( )
A.若平面向量![]() ![]() ![]() ![]() |
B.在![]() ![]() ![]() ![]() ![]() |
C.函数![]() ![]() ![]() |
D.已知P为![]() ![]() ![]() |
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3 . 已知向量
是非零向量,
是单位向量,
的夹角为
,且
,则
( )
![](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/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231b861d6d1f1d0b9f52b041cb40eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35325b12aded89037f86f59e57c8c97f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc009cdbdb648e63e75034b9763e1e79.png)
A.![]() | B.![]() | C.1 | D.2 |
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4卷引用:江西省宜春市铜鼓中学2022-2023学年高二上学期第一次月考数学试题
4 . 设
是非零向量,则
是
的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98b5c2a93a2e890c105632122374b9e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7677fa4ecba4dd4005f5a1b52cf86b82.png)
A.充要条件 | B.必要不充分条件 |
C.充分不必要条件 | D.既不充分也不必要条件 |
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解题方法
5 . 已知非零向量
,
满足
,且
,则
与
的夹角为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/321db7c2b15c493abba7cbfa7099dba9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264fd7d9ea91062369c298c81723658e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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解题方法
6 .
中,
,
,
,
,且
,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d06d928c7135430226c0b129ffb8baf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d64245cc43fff6cfde5555c0a11fe6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
7 . 已知
,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4d174410d168645c3e4b35376e8ac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328c55d3df5574e2b6f5f53b55f57a3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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解题方法
8 . 已知动点
在椭圆
上,若
点坐标为
,
,且
,则
的最小值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e78f1a9cc4dedc05c175ab99b288b9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c3a2f5b0702ea9fbb9dc8904579737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5283be7fafb828a8d4b768f4b369bf15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2bc7d6a56dae981063d21b17d0d33f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e2bd4dad2e4698fdbafd678999bebc.png)
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9 . 在直角
中,
,
,
分别是
的内角
,
,
所对的边,点
是
的重心,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac181587e24ada2d254f9918b62e70a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f774cd650f14c8f6e4fe0c6a432768bb.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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20-21高一下·全国·课后作业
名校
解题方法
10 . 已知非零向量
满足
,且
与
的夹角为120°,则
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d194ecefc9101001d88d3cc0bc9d6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12976a4d92584494d1c2c714684d45b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e624897fb5ca472e9fae6a779da86af0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f405f5120774ca494da286553b62df3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4103ce09771275c5fb75fe60e4ea26a5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2021-04-20更新
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4卷引用:江西省宜春市上高二中2020-2021学年高一下学期第五次月考数学(理)试题
江西省宜春市上高二中2020-2021学年高一下学期第五次月考数学(理)试题(已下线)6.2.4 向量的数量积(练习)-2020-2021学年下学期高一数学同步精品课堂(新教材人教版必修第二册)湖北省武汉市黄陂区第一中学2021届高三下学期高考押题卷数学试题福建省厦门第一中学2021届高三高考模拟考试数学试题