名校
解题方法
1 . 在
中外心为G,内角
,
,
的对边分别为
,
,
,且
,若
,则
( )
![](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/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/fcd6706d695be22612b863f4a6055b1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca42630f4e1c5f6b242878530243944c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1698a4413ae2fb60ff8c3ba83f0852d5.png)
A.![]() | B.50 | C.25 | D.![]() |
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名校
解题方法
2 . 已知单位向量
,
满足
,则
与
的夹角等于( )
![](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/c85a023e00d6ecb15a68c58754afaf76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
3 . 在
中,
是边
的中点,
是线段
的中点.若
,
的面积为
,则
取最小值 时,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32220fd969663f42cd619f8cc8b355c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e6f0e94393fc6bbd9b4b83ede534ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc0de00cff352df72961a2a135a1125.png)
A.2 | B.![]() | C.6 | D.4 |
您最近一年使用:0次
2024-06-13更新
|
412次组卷
|
3卷引用:江苏省连云港市灌云县第一中学2023-2024学年高一下学期5月期中考试数学试题
名校
4 . 根据《周髀算经》记载,公元前十一世纪,数学家商高就提出“勾三股四弦五”,故勾股定理在中国又称商高定理.而勾股数是指满足勾股定理的正整数组
,任意一组勾股数都可以表示为如下的形式
,其中,
均为正整数,且
.如图所示,
中,
,三边对应的勾股数中
,点
在线段
上,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e61df74eaab3fe801486caff95d72b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61d4d0a815d4976f0dd327d23fca2e4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4d7e68d0c8bd9a32d826c721ab74d9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7091d529281abff275ef19b9197445a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b51d3992644d37dc71c9b5a97d515c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7eabcf398837366b6d86c343b173690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eee1b37025a6aefdb2b636f988985c3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa6c3ea24743e594cc3b0fdd3877d88c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88f450e2e6f7dd951d9623e3c57e8f27.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-06-12更新
|
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2卷引用:江苏省江都中学、江苏省高邮中学、江苏省仪征中学2023-2024学年高一下学期5月联合测试数学试卷
名校
5 . 在
中,已知
,
,若
分别是
的三等分点,其中
靠近点
,记
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8520a21b909d04f763d0f61dd74bc158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86c589939053ce21ce0a67cf40054a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad3066aadbe41d8fb72bceed2e9d297.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f24ef72400d1eba4842046b6ba246b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd4cb2e90e56e2563a28cb109261062f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
6 . 若向量
满足
,
,且
,则向量
与
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/962421d06de6573a56388afb4a8c4add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27cbd3ad4cfa6d2a99a3cf2217f96134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2396cac4b185cf1f1a67dad9248481c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1d715863fff24155c89919acc94dc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
7 . 已知平面向量
,
夹角为
,且满足
,
,若当
时,
取得最小值,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/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7c6e69895574db29f6326bd82f21e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404067afb19bd74f447a6c0c832af1da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9ca1759fe015f8b8eb441c9001e24ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2027974bcdb11897eddf5689a6b962c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96baee807c43e1a7b7feacf142813e8b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-06-09更新
|
533次组卷
|
4卷引用:江苏省宿迁市泗阳县实验高级中学2023-2024学年高一下学期第二次调研测试(5月)数学试题
江苏省宿迁市泗阳县实验高级中学2023-2024学年高一下学期第二次调研测试(5月)数学试题四川省凉山州2024届高三第三次诊断性检测数学(理)试题湖北省襄阳市第五中学2023-2024学年高一下学期5月月考数学试题(已下线)专题2 以平面向量数量积为背景的最值与范围问题【讲】(高一期末压轴专项)
名校
解题方法
8 . 如图,设正八边形
的边长为
,若
,则此正八边形的面积是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d17d4a6cf11cda87b3dfafaecdec683f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc98f1b7800a7011467638f12c5b39cb.png)
A.1 | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
名校
9 . 在
中,角
所对应的边为
,
,
,
,
是
外接圆上一点,则
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.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/f289ef19c7418a898ea18747aa76e783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b85155ef02a3d4ad84819e14d0c12a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2638dd9f105d1a2a00f995ec25e04441.png)
A.4 | B.![]() | C.3 | D.![]() |
您最近一年使用:0次
2024-06-07更新
|
657次组卷
|
3卷引用:专题01 平面向量重难题型(2) -期末真题分类汇编(江苏专用)
名校
解题方法
10 . 已知
,
,
,则向量
与
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e7f14dfa9f463d57664c640102bb5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4bc0c419f5e85ede099956c486cbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3722e62892e117c5446b6f839e5bd8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-06-07更新
|
873次组卷
|
3卷引用:专题01 平面向量重难题型(2) -期末真题分类汇编(江苏专用)