名校
1 . 已知向量
与
的夹角为
,且
,
.
(1)若
与
共线,求
;
(2)求
与
的夹角的余弦值.
![](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/fca81a3bdf849b4c9ebb73854d54b92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9936a46cc891744d4600f76bb92b694c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da08da2af81a46e41d2e5eba47acf20.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ebe808ac9641a9fbedd4af829368e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c66a1d146181d655f231d73cf5736af5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b91254db5ff748150f449c5cdd256c.png)
您最近一年使用:0次
2021-07-23更新
|
548次组卷
|
6卷引用:四川省绵阳中学2022-2023学年高二上学期入学考试数学(文)试题
名校
2 . 曲线
与两坐标轴的交点都在圆
上,圆
与
轴正半轴、
轴正半轴分别交于
,
两点.
(Ⅰ)求圆
的方程;
(Ⅱ)过点
作直线
与圆
交于
,
两点,是否存在
使得
与
共线,如果存在求直线
的方程,若不存在请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d794141572c8b1e70957754f32b9eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(Ⅰ)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e298293515d3c5d8343b668fe8541d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad7ce915e732d42fdab42890b716c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd4b9ad667f6da79bc3a5737cbc1eee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
解题方法
3 . 已知向量
,
不是共线向量,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6ba7ec0a3f77a71e72455fea19141dd.png)
(1)判断
是否共线;
(2)若
,求
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560ee2894ba8c5cee6633430cc8b3b41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f1a8e551cba7ec9f451749f60e628d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9145a44701b280e41afc4ae67f79d8f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73bc013cac1343c1fdd85e1a16fd4756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6ba7ec0a3f77a71e72455fea19141dd.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c13327875f7ecbfe021841d6f681a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
2020-04-01更新
|
625次组卷
|
5卷引用:四川省射洪县射洪中学2019-2020学年高二上学期入学考试数学试题
四川省射洪县射洪中学2019-2020学年高二上学期入学考试数学试题四川省乐山市2018-2019学年高一下学期期末数学试题(已下线)6.2.1 平面向量的线性运算(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)(已下线)2.3.4 平面向量共线的坐标表示-2020-2021学年高一数学课时同步练(人教A版必修4)云南省昭通市绥江县第一中学2019-2020学年高一下学期第一次月考数学试题
4 . 已知向量
,向量
;
求实数x的值使得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc4f186639f0ae8120f9192f55a40b0.png)
如果
,求
与
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be0d9bdd8cd1ba585984dcca5824df8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a44560331d38697aa6498353b119b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc4f186639f0ae8120f9192f55a40b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2600a54b7bf3f79aaec7d49a47f6b4d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5489c33b01f79f51847922339870747b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd818bb0aa3504a6733f104e19f8c967.png)
您最近一年使用:0次
2019-03-12更新
|
725次组卷
|
3卷引用:【市级联考】四川省德阳市2018-2019学年高二上学期期末考试数学(文)试题