1 . 已知直三棱柱
中,侧面
为正方形,
,E,F分别为AC和
的中点,D为棱
上的点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/ec63c8b9-2ce5-4713-acaa-03b0c8d15684.png?resizew=135)
(1)求证:
:
(2)当
时,求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0023280949eda97787964f0a9d41ed2e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/ec63c8b9-2ce5-4713-acaa-03b0c8d15684.png?resizew=135)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a7a3dc3f3a02f4400e22dec2f2fee23.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97685285fc594a91098e09b0374b17c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
您最近一年使用:0次
解题方法
2 . 设双曲线C:
(
,
)的右焦点为F,点O为坐标原点,过点F的直线
与C的右支相交于A,B两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/1e8e31f1-e40d-4c06-b771-0bac1138391c.png?resizew=147)
(1)当直线
与x轴垂直,且
两点的距离等于双曲线C的实轴长时,求双曲线C的离心率;
(2)若双曲线C的焦距为4,且
恒成立,求双曲线C的实轴长的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/1e8e31f1-e40d-4c06-b771-0bac1138391c.png?resizew=147)
(1)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(2)若双曲线C的焦距为4,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c22b86f2cc5dc2f8053711f932a57f9.png)
您最近一年使用:0次
解题方法
3 . 已知
,
分别是椭圆
(
)的左,右焦点,椭圆上一点P满足
,且
,则该椭圆的离心率等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2427943a38dcd93c9ec9b735ffc9fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79e2401537850d6b2e6f3aeedc4acc3e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 双曲线
的渐近线方程是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760a793ad8dadeba59aef81106e95288.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
5 . 已知向量
,
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e8aeb6de6e29a9fcc0126c7186665f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f561f3a2196cc0add3e322df439e8c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf21fef3026cfe445a855c94cab5c84.png)
A.充分不必要条件 | B.必要不充分条件 | C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
6 . 在三棱锥
中,
,
,点
在
上,
,
为
中点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb53a5e73f95e3f46a34965c5c0ac73.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4278c0911e7df78965e78cff69cac5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50ccad4025134a601044fbc58f1cf4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3744bb598bb9292a98812dddf9fdb3cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c6aa2a7c840613899fac45f7dd04789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb53a5e73f95e3f46a34965c5c0ac73.png)
您最近一年使用:0次
名校
解题方法
7 . 已知空间内三点,
,
,则点A到直线
的距离是( ).
A.![]() | B.1 | C.![]() | D.![]() |
您最近一年使用:0次
2023-03-26更新
|
834次组卷
|
7卷引用:浙江省湖州市2023-2024学年高二上学期期末调研测试数学试题
浙江省湖州市2023-2024学年高二上学期期末调研测试数学试题天津市四校2022-2023学年高二上学期期末联考数学试题(已下线)第10讲 拓展四:空间中距离问题(等体积法与向量法,4类热点题型讲练)-【帮课堂】2023-2024学年高二数学同步学与练(人教A版2019选择性必修第一册)(已下线)1.4.2用空间向量研究距离、夹角问题(第1课时)天津市静海区第一中学2023-2024学年高二上学期10月学生学业能力调研数学试题河南省潢川第一中学2023-2024学年高二上学期第一次月考数学试题(已下线)通关练03 用空间向量解决距离、夹角问题10考点精练(58题) - 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教A版2019选择性必修第一册)
8 . 已知椭圆
的左右焦点分别为
,点
在椭圆
上,其左右顶点分别为
为椭圆
的短轴端点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/e8ce9190-7edb-4491-8fc6-9dcd82cb77dc.png?resizew=312)
(1)求椭圆
的方程;
(2)设
为椭圆
上异于
的任意一点,设直线
与直线
交于点
,过
作直线
的垂线交椭圆
于
两点.
(i)设直线
与
的斜率分别为
,证明:
为定值,并求出该定值;
(ii)求
(
为坐标原点)面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be7e86ffe4417ef0fc3990049f80743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81687c0af83f550bcb802e2d82c76a61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/178fe35c61e966a344f6ef34c79d86fd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/e8ce9190-7edb-4491-8fc6-9dcd82cb77dc.png?resizew=312)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2bbc1205da581e3afaf6b3286c3c641.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
(i)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d8707cafd80cde5c561e2b5a3531c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ded6dbecb802a8a296e767c4b41ea4.png)
(ii)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
解题方法
9 . 已知梯形
中,
,
,
,
.现沿
将
折起至
(
平面
).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/9/5e4147f2-b84d-494a-80af-c60f8954cae8.png?resizew=447)
(1)若
(如图1),求
的值;
(2)当
且二面角
的平面角为
时(如图2),求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8424b9d5e1b342fafe8afb8f01f67be5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a58a622e2b1a239f2f96aa1501e9799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f8b2bbbeadfaf1d73bec472a51444c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68696b781af2609327222d22cb7bab3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5069fd8f468cb41cfbe72d15d76ff1db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/9/5e4147f2-b84d-494a-80af-c60f8954cae8.png?resizew=447)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0de9c590fdc63d21052099df184776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c35e8cf7b77cda3a23aaca62cd937f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d9c105f5558d48cc42218ed2b3ef4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ef4384024108d23c4e6493cc607831.png)
您最近一年使用:0次
解题方法
10 . 在四棱柱
中,底面
为平行四边形,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/f8da4206-e49d-4269-b839-92de6c075d25.png?resizew=203)
(1)用
表示
,并求
的长;
(2)若
为
中点,求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca1261408ad769c89952d8228675c25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde9cae2c1df3951175b2a8cd6ad84ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/f8da4206-e49d-4269-b839-92de6c075d25.png?resizew=203)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d68873c59a21b0cd408cdf2b47d51096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccec46f7c4da972fef6e940158628242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
您最近一年使用:0次