1 . 已知直线
若直线
与直线
平行,则m的值为________ ,动直线
被圆
截得的弦长最短为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/741aa2d1ca90e2aeddb9794a36aa2845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb718f1c0f7019503b92e11e92ec4c12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a267b62fd6c0fea129019c7bfa153b.png)
您最近一年使用:0次
2020-04-24更新
|
492次组卷
|
3卷引用:2020届浙江省衢州、丽水、湖州三地市高三下学期4月教学质量检测数学试题
解题方法
2 . 如图,在长方形ABCD中,AB=4,AD=2,点E是DC的中点,将△ADE沿AE折起,使平面ADE⊥平面ABCE,连结DB、DC、EB.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/1b35591d-3b07-4235-a95c-bba1a586ecb7.png?resizew=317)
(1)求证:平面ADE⊥平面BDE;
(2)求AD与平面BDC所成角的正弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/1b35591d-3b07-4235-a95c-bba1a586ecb7.png?resizew=317)
(1)求证:平面ADE⊥平面BDE;
(2)求AD与平面BDC所成角的正弦值.
您最近一年使用:0次
3 . 设椭圆
的标准方程为
,若斜率为1的直线与椭圆
相切同时亦与圆
(
为椭圆的短半轴)相切,记椭圆的离心率为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29078df0f69f0fb2c1547e384a02b6b.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c01dcc840474ece516c29a4e2971ee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29078df0f69f0fb2c1547e384a02b6b.png)
您最近一年使用:0次
解题方法
4 . 如图,在四棱锥
中,
,
,
是等边三角形,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/e2a18de2-c66d-42df-9e1b-22557a1455e2.png?resizew=208)
(1)求证:
;
(2)求直线
与平面
所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bce559fceb4731f8d4323410075a22b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ada4b1a1df7f0959222d971f928c392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638d9cccb679214718224c3088ed4a10.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/e2a18de2-c66d-42df-9e1b-22557a1455e2.png?resizew=208)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d8455347237248c7701100642c5b119.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e106f4233be16e98f2c1bf9f1635622.png)
您最近一年使用:0次
5 . 如图正四棱锥
,
为线段
上的一个动点,记二面角
为
,
与平面
所成的角为
,
与
所成的角为
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/71cc8716-36e3-4abc-b514-6f7979becb0c.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d9f756419912dd298a0d6857130c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/71cc8716-36e3-4abc-b514-6f7979becb0c.png?resizew=157)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
6 . 设向量
,记
,若圆
上的任意三点
,且
,则
的最大值是___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28da04b075b7052f8aacc89745e23a4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76dfc0aaa5781840f83ce5a432a28ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da045d7d822d1a0f9c14caf55fda5708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d5c735977e21e265d9519772f546d91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9247f5ae37d8fe6f2f404e1f921d64c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/848280156a3fc4382387c38e46b5b24f.png)
您最近一年使用:0次
2020-04-14更新
|
703次组卷
|
5卷引用:浙江省宁波市十校2019-2020学年高三下学期3月联考数学试题
浙江省宁波市十校2019-2020学年高三下学期3月联考数学试题(已下线)专题12 平面向量-冲刺2020高考跳出题海之高三数学模拟试题精中选萃(浙江专版)浙江省2022届高考模拟卷数学试题(一)(已下线)专题06 《圆与方程》中的压轴题(2)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)(已下线)广东省深圳市高级中学(集团)2023届高三上学期期末数学试题变式题11-16
解题方法
7 . 已知
是椭圆
:
的左焦点,
,
是椭圆
上的两个相异动点,若
中点的横坐标为1,则
到直线
距离的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
8 . 如图,已知抛物线
的焦点为
,准线为
,过点
的直线交抛物线于
,
两点,点
在准线
上的投影为
,若
是抛物线上一点,且
.
![](https://img.xkw.com/dksih/QBM/2020/4/14/2440882175598592/2441210695991296/STEM/19d4e623-8068-4f86-95e4-f62dab55cf63.png?resizew=157)
(1)证明:直线
经过
的中点
;
(2)求
面积的最小值及此时直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1384ffba86ff08ce9e783d5d1bc51686.png)
![](https://img.xkw.com/dksih/QBM/2020/4/14/2440882175598592/2441210695991296/STEM/19d4e623-8068-4f86-95e4-f62dab55cf63.png?resizew=157)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
9 . 已知平面向量
满足
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d189ba56ed46476376bb15266540cfef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a34493cb712dc8bf9fdaec2a76a079e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c69180f9a3200e2674de6a28a4b5a3e6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
10 . 已知圆
,圆
,定点
,动点
,
分别在圆
和圆
上,满足
,则线段
的取值范围_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9edf67c2e68042e26faefd72455386c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a3ef6da64080039ca5541c7d6b23d49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c9dcfd9f4c5298035870cb88a34169.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/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db9fd618a94a5fab5521d10166c302bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2020/4/13/2440491633590272/2440573049126912/STEM/d131921b1fb643b199ca72d209d14777.png?resizew=230)
您最近一年使用:0次
2020-04-13更新
|
686次组卷
|
5卷引用:浙江省杭州市2022-2023学年高三上学期期末模拟数学试题
浙江省杭州市2022-2023学年高三上学期期末模拟数学试题江苏省南通市启东中学2019-2020学年高一(普通班)下学期期初考试数学试题江苏省南通市启东中学2019-2020学年高一(创新班)下学期期初考试数学试题江苏省苏州新草桥中学2019-2020学年高一下学期期中数学试题(已下线)2.1 圆的方程-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)