1 . 平面向量
与
的夹角为
,且
,
,则
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6bc7f1188fd238aef8dcb47105a8233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/285a78e061d318c724971ce7def2d8dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcdccd9d882fb75845576952d8d6b564.png)
您最近一年使用:0次
2020-01-11更新
|
604次组卷
|
2卷引用:河南省洛阳市2019-2020学年高三上学期第一次统一考试(1月)数学(文)试题
2 . 已知平面向量
与
的夹角为锐角,
,
,且
的最小值为
,若向量
满足
,则
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8faf351b569991fbdb8d8d30c72e72b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbcc0fa4b480c43e9a66273898c9a60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad13acf16320b24568cceda6edd1e803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5e0ed6c093685623ad88927d9affa0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d2bb1248ff1123ebc2cb9d7fc16d25.png)
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2019-01-24更新
|
1581次组卷
|
5卷引用:河南省洛阳市第三高级中学2022-2023学年高一下学期5月月考数学试题
名校
解题方法
3 . 在平面直角坐标系
中,已知点
.
(1)求
.
(2)设实数t满足
求t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e62993862de9b974f6424789a6ec456.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8e97bf16bc8814b9d1162c9e36a9569.png)
(2)设实数t满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44c5aa3470e55cc8111b4ad986afd3a4.png)
您最近一年使用:0次
2018-08-23更新
|
736次组卷
|
6卷引用:河南省洛阳市第二高级中学2022-2023学年高一下学期4月月考数学试题
解题方法
4 . 在平面直角坐标系中,
满足
,设点
的轨迹为
,从
上一点
向圆
作两条切线,切点分别为
,且
.
(1)求点
的轨迹方程和
;
(2)当点
在第一象限时,连接切点
,分别交
轴于点
,求
面积最小时点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/744277d64f9f0e948fd90dbcf96def48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9918e67017e652e69664dea3b45d7363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/865754a29698c79f9c4e4e36a0ddba74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3970c642ce20ee1adbc31c19ab26186.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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5 . 已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a2b314b517daeec639136550c8a7f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa11c52ad2b4c5b258879fd592d3008.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c15cbdd4a7ea1fca5192a0d26e01148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a2b314b517daeec639136550c8a7f76.png)
A.1 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-04更新
|
276次组卷
|
2卷引用:2016届河南省洛阳市高三毕业班三练数学(文)试卷
6 . 已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b8769d7bf2001355155359c70d8566.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de5d4597ccc8a1b0ffcf97aa9f143053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1d8ce513aca752f863d29874a2a961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b8769d7bf2001355155359c70d8566.png)
您最近一年使用:0次