1 . 若向量
,
满足
,
,若
与
的夹角为锐角,则
的取值范围是________________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7958a6bddd1d578bbd6fbcb92e3f6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2396cac4b185cf1f1a67dad9248481c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2037642cdaa927f01b2cfd41bc8dc7f.png)
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解题方法
2 . 若向量
,
满足
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29276b43a2950ed71f0f9629a35dfa74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2224f5f5991428f75b4ea3b559e4dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c71ff32ae633697b26cc81c9b2481f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d6fce004c47849c29ebd8d5d7c16e98.png)
A.2 | B.3 | C.4 | D.5 |
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解题方法
3 . 已知
,
均为单位向量,且
与
夹角为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](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/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1874ba7c5b7c38346670ff1d749cc7.png)
A.3 | B.![]() | C.2 | D.![]() |
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解题方法
4 . 已知
=1,
=2,且
与
的夹角为
,则
= ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d723baf90e91b4691a2dcdd8f2a53e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7d8b42c85013ba07ba18e5e46d8716.png)
![](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/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb74499b8965b3f6c9acfbbb168df438.png)
A.13 | B.![]() |
C.![]() | D.![]() |
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5 . 平面向量
,
满足
,
,向量
与
的夹角为
,则
( )
![](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/8e7f14dfa9f463d57664c640102bb5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eca8fb20438505791369da9abe4a804.png)
![](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/732250efe9c8c0cbca127fb2ed2a4bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894314ca9ec64c711707bc6ddcf71033.png)
A.![]() | B.4 | C.2 | D.![]() |
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6 . 在三角形
中,角
的对边分别是
.
,
,且
,则三角形
的面积是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead4af7dd446bd75d611bcc95dd0729b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3afa1b21858efbbbd6ec51c229e2f9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f448ab705ce98a0b1ab97863d0cbeda3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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7 . 在
中,
,点
为
外接圆的圆心,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca902cd1857b0b95703521972a4214eb.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8121e767295d6811f014f4b332e4b6cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca902cd1857b0b95703521972a4214eb.png)
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2023-07-03更新
|
741次组卷
|
4卷引用:重庆市主城区七校2022-2023学年高一下学期期末联考数学试题
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8 . 如图,正六边形的边长为2,半径为1的圆
的圆心为正六边形的中心,,若点
在正六边形的边上运动,动点
在圆
上运动且关于圆心
对称,则
的值可能为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/19627aea-c07d-4a7c-99d5-f3f66c2b8e03.png?resizew=152)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6356488b921e900ad8f0448d20e918e6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/19627aea-c07d-4a7c-99d5-f3f66c2b8e03.png?resizew=152)
A.![]() | B.![]() | C.3 | D.![]() |
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|
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8卷引用:重庆市铜梁区2021-2022学年高一下学期期末数学试题
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名校
解题方法
9 . 已知锐角
的内角A,B,C所对的边分别为a,b,c,向量
,
,且
.
(1)求角
的大小;
(2)若
,
边上的中线
长为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68aa2f092ba3c76ce401c565877f0583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe2058cbad7f49ac6b88a3a5ec9dbd96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2758285d3c1d8c16784edbc5f572fc26.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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2022-07-20更新
|
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10 . 已知向量
,
满足
,则
与
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05ecc2838816a0e4f7d7c0fb0c3bf27d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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|
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重庆市西南大学附属中学2021-2022学年高一下学期期末数学试题重庆市九龙坡区育才中学2023-2024学年高一下学期寒假检测定时训练数学试题(已下线)6.2.4 向量的数量积(精讲)-【题型分类归纳】2022-2023学年高一数学同步讲与练(人教A版2019必修第二册)(已下线)复习专题02平面向量的数量积运算(1)-期末专项复习