1 . 矩形
中,
,
,动点
满足
,
,
,则下列说法正确的是( )
![](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/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9545017eee79a71befee621b52c8cae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee72261f6901e62dfd0ffe547406544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e2e01346f60857ff635bb766802e57.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
2 . 已知
,
,
,
.
(1)若
,且方向相反,求实数
的值;
(2)若
与
的夹角为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f5d205879cac5643927b05995cd12b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ca897f2f6cc207994a89f79edf6206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/186f28f89a2b5a72970c36d8c4022d6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd79264e130de60a100b001b5d45585c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2023高三·全国·专题练习
名校
解题方法
3 . 在梯形ABCD中,AC,BD交于点O,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f21166b4939b024b3e9e76b7b72ab8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddf504bc9f50ecfff2cc4183ff514039.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-05-12更新
|
629次组卷
|
3卷引用:湖北省武汉市第六中学2022-2023学年高一下学期第六次月考数学试题
名校
4 . 如图所示,在
中,
为
边上一点,且
,过
的直线
与直线
相交于
点,与直线
相交于
点(
,
两点不重合).
,
表示
;
(2)若
,
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff400c098ae6bf6abd24651a5a21114e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4425dc7c346e4597c0521d7f636174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d3605b320cae7b4a85aa273dfb7e606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a58464a16629aa18aa99187cb0d398.png)
您最近一年使用:0次
2023-05-11更新
|
989次组卷
|
5卷引用:湖北省鄂西南三校2022-2023学年高一下学期5月月考数学试题
名校
解题方法
5 . 已知
,
.
(1)当
为何值时,
与
垂直;
(2)当
为何值时,
与
的夹角为锐角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd8e24205bc410c881a04169f70d608e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0b62bc3aa312f8d5854764549681852.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62b625b8d3178dd0ea451a80a63082c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/437dc907211c5934f938d869f6b19e93.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62b625b8d3178dd0ea451a80a63082c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/437dc907211c5934f938d869f6b19e93.png)
您最近一年使用:0次
名校
6 . 对于任意
,
,
,两直线AD,BE相交于点O,延长CO交AB于点F,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/12/a63657d5-0e5b-4f0b-bea8-f324e5424765.png?resizew=187)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122fe84cfa345c1902231699c96beac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4366c4b84067d2da0b23619449fd807f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/12/a63657d5-0e5b-4f0b-bea8-f324e5424765.png?resizew=187)
A.![]() |
B.![]() ![]() |
C.当![]() ![]() ![]() ![]() |
D.![]() |
您最近一年使用:0次
2023-05-10更新
|
1162次组卷
|
6卷引用:湖北省武汉外国语学校2022-2023学年高一下学期期中数学试题
湖北省武汉外国语学校2022-2023学年高一下学期期中数学试题贵州省黔西南州2022-2023学年高一下学期期末教学质量检测数学试题四川省2022-2023学年高一下学期“贡嘎杯”期末质量检测考试数学试题(已下线)第6章 平面向量及其应用 单元综合检测(难点)-《重难点题型·高分突破》(人教A版2019必修第二册)(已下线)第11章 解三角形 单元综合检测(难点)--《重难点题型·高分突破》(苏教版2019必修第二册)(已下线)第五篇 向量与几何 专题13 奔驰定理 微点2 奔驰定理(二)
名校
7 . 如果平面向量
,
,则向量
在
上的投影向量为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43fa9307f35580493bf435ac6a464b25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c99f828c8fcae6d366146c16f4be841b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed492f7b29166ba5c1f0023b05a439c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
您最近一年使用:0次
2023-05-06更新
|
1287次组卷
|
6卷引用:湖北省武汉市第六中学2022-2023学年高一下学期第六次月考数学试题
名校
8 . 在平面凸四边形(每个内角都小于
)
中,
,
,
,
.
(1)求四边形
的面积;
(2)若
,
为边
,
的中点,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882f7936fbe0ac6e1ad58edc0d8cd912.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be66a4dad3eda57de0458eec62752245.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f144992e1cbee34868abce1e5ad38c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18834f4ba51bf4d490f35ed02379fec7.png)
(1)求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e24c9053c4d6765a689c02d796f89ba.png)
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2023-05-05更新
|
525次组卷
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4卷引用:湖北省武汉市华中师范大学第一附属中学2022-2023学年高一下学期6月期末数学试题
湖北省武汉市华中师范大学第一附属中学2022-2023学年高一下学期6月期末数学试题江苏省连云港市东海县2022-2023学年高一下学期期中数学试题(已下线)模块一 专题3 解三角形(2)(人教B)(已下线)模块二 专题1 解三角形与平面向量
名校
9 . 已知向量
,
,且
与
共线,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd01707e8d32f277b83c007a5b15bd7.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50b0757fa5a551a649cad222a89d2f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b8a938272fcafa3ab17db0c884df9d5.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/1bd01707e8d32f277b83c007a5b15bd7.png)
您最近一年使用:0次
2023-05-03更新
|
520次组卷
|
3卷引用:湖北省仙桃中学2022-2023学年高一下学期5月月考数学试题
名校
解题方法
10 . 如图,在直角梯形
中,
//
,
,
,
为
上靠近点
的一个三等分点,
为线段
上的一个动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/3d565590-9bd5-4c38-a99c-4f39941ddd74.png?resizew=165)
(1)用
和
表示
;
(2)设
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c54276d36db232bc3ae6327f757241c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f88da394d8b8831dc5c8cbb4e77d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/3d565590-9bd5-4c38-a99c-4f39941ddd74.png?resizew=165)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8337706c550bc095d7a2bd872221a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e723e57753f0a4fe1ef8ca1aee0e2117.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7f7cf6f3535ccca001fcf45670d816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1884dd7bea1b00c41563bc4abcd9d422.png)
您最近一年使用:0次