解题方法
1 . 已知
的内角
的对边分别为
为锐角,且
.
(1)求角
的大小;
(2)若
的面积为
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c14ba33dc87a2a27b93e1385e7c283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fa80b62c33ea69fa82cb1e7016027b0.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ca820a456491348e72587e4fe10bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd5b9bbd3d22bd2cef53dd4b9691257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c925be255ca736a53b24d13ddede1a86.png)
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解题方法
2 . 在正方体
中,异面直线
与
所成角的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-06-15更新
|
678次组卷
|
5卷引用:青海省格尔木市第七中学2023-2024学年高二下学期期末考试数学试题
青海省格尔木市第七中学2023-2024学年高二下学期期末考试数学试题(已下线)期末测试卷01-《重难点题型·高分突破》(人教A版2019必修第二册)(已下线)专题06 空间角、距离的计算-期末考点大串讲(苏教版(2019))(已下线)核心考点7 立体几何中角和距离 A基础卷 (高一期末考试必考的10大核心考点)广东省东莞市海逸外国语学校2023-2024学年高一下学期第三次质量检测数学试题
3 . 某工厂12名工人某天生产同一类型零件,生产的件数分别是
,
,则这组数据的第75百分位数是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a2d1be7f12746c629d44822a170133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19eba032047f1bdbaeaaf5ee687d9104.png)
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4 . 某人射箭10次,射中的环数依次为
,关于这组数据,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d361de6f91205ecf6a63169513771b0.png)
A.众数是8 | B.中位数是7.5 | C.平均数是8 | D.方差是![]() |
您最近一年使用:0次
解题方法
5 . 在
中,内角
所对的边分别为
,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/09eebab59213386449a726b75065bf76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe7a93172d308a58200e3c722fe1072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c020bd7fcaca0e6f76973f050488704.png)
A.![]() | B.![]() | C.1 | D.![]() |
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解题方法
6 . 任意
,有
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48402431243ccf5e7e01edd64a0b8c3.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7368766dc6206018032c846a0b7ac91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc495172f6a0522ccd4f8d5122e6423.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48402431243ccf5e7e01edd64a0b8c3.png)
您最近一年使用:0次
解题方法
7 . (1)求以
为渐近线,且过点
的双曲线
的方程;
(2)求以双曲线
的顶点为焦点,焦点为顶点的椭圆
的方程;
(3)椭圆
上有两点
,
,
为坐标原点,若直线
,
斜率之积为
,求证:
为定值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060e229870f126b31e37965bc0c58667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9688d9222656b5855e27689123d560ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)求以双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(3)椭圆
![](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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f6c5fd93aed88bec58002a20ea2e90.png)
您最近一年使用:0次
名校
解题方法
8 . 复数
,满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21094e3ba9668654a9d3afea8de90548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d0580554f9ed64f76cf411a814c06f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
A.![]() | B.![]() | C.-3 | D.-4 |
您最近一年使用:0次
2024-02-17更新
|
475次组卷
|
2卷引用:青海省西宁市大通县2024届高三上学期期末数学(理)试题
9 . 在直角坐标系xOy中,曲线C的参数方程为
(其中
为参数).以坐标原点O为极点,x轴正半轴为极轴建立极坐标系,直线l的极坐标方程为
.
(1)求直线l的直角坐标方程和曲线C的普通方程;
(2)已知点
,直线l与曲线C交于M,N两点,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b63545dd7224e0ba29aa76f763f6da85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4f020e7f5de31b6b4967a2810b3be8.png)
(1)求直线l的直角坐标方程和曲线C的普通方程;
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d56ab70e602f2e2e291df643ab209162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82917a85af3499c0b6400b26abce2f2f.png)
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10 . 已知函数
的部分图象如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/10/3902c37c-3e22-4d43-b83e-6232bf56b2a6.png?resizew=174)
(1)求
的解析式;
(2)求
的单调递增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0ef9d537e1849ed448318247dce9f7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/10/3902c37c-3e22-4d43-b83e-6232bf56b2a6.png?resizew=174)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
您最近一年使用:0次