2024·全国·模拟预测
解题方法
1 . 如图,在直三棱柱
中,
为
的中点,平面
与平面
的交线为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/3/83b59009-d904-4060-bf9e-1f6f099530a3.png?resizew=165)
(1)求证:
平面
;
(2)若
,
,
,
,直线
与平面
所成角为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.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/db3ef97d64e58d311019b70fe5e2cc0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/3/83b59009-d904-4060-bf9e-1f6f099530a3.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23976db53f05b3d5d791c4d736a7184d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99644f0e0881bc7bf383a88eb92c0949.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db57eca2a7cbd91bc57372592580a76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c9eb310d9d90592d7ea635e3e06bb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99644f0e0881bc7bf383a88eb92c0949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9399c9a2a31b0e3165aea2d6ccc4f7c9.png)
您最近一年使用:0次
2024·全国·模拟预测
解题方法
2 . 在平面直角坐标系内,已知
,
,
为动点,
的面积为
,记动点P的轨迹为W.
(1)求W的方程;
(2)经过
的直线与W交于点A,B,过点A作斜率为2的直线与W的另一个交点为C,求证:直线
恒过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15ed90ebf0061c8a79beed307fc1719a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f36374ce95a4945d0e58264c2b271f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e4fe484ed5360b0abebf0078f3dc40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225c0723cc3e08112fde8a02051997d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc46f9cd1603c7b1abda58467e6ba7b.png)
(1)求W的方程;
(2)经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d347ce38af382b8667283eef0e38b167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
2024·全国·模拟预测
3 . 如图(1),在
中,
,
,点
为
的中点.将
沿
折起到
的位置,使
,如图(2).
.
(2)在线段
上是否存在点
,使得
?若存在,求二面角
的余弦值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77254996f9c0b31d0cf5a4f01ac46041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a916d31a199e250556fb7478d9f57f7.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9072b0fae4133badde0a221234cca8f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3507a1f894fac6b554a49b1167965bbb.png)
您最近一年使用:0次
名校
4 . 如图所示,在梯形
中,
,
,
.四边形
为矩形,且
平面
.
平面
;
(2)若直线
与
所成角的正切值为
,点
在线段
上运动,当点
在什么位置时,平面
与平面
所成的锐二面角的余弦值为
.
![](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/2f18f1b5ebe17b068fe79bdf30d6effc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b0382c28547d3834ca71f3f0677695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbc56d42b003cbcb1fbe5c50e55b26b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac0b72906641ed13716cfbce50923282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09d9d486b7f91ba933210dd013a7f2c.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf2f0df53aa68c9c334165034788166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2db1674add0f4a1a24f5ed893b1c5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e108d5c61e85e0741ec2c484fc5768.png)
您最近一年使用:0次
2024-01-31更新
|
1203次组卷
|
5卷引用:四川省攀枝花市普通高中2023-2024学年高二上学期教学质量监测数学试题卷
四川省攀枝花市普通高中2023-2024学年高二上学期教学质量监测数学试题卷2024届高三新改革适应性模拟测试数学试卷二(九省联考题型)(已下线)第5讲:立体几何中的动态问题【练】(已下线)黄金卷04(2024新题型)新疆生产建设兵团第三师图木舒克市第一中学2023-2024学年高二下学期数学开学考试数学试卷
2024·全国·模拟预测
解题方法
5 . 如图①,在直角梯形
中,
,
,
,
,
,
,
分别在边
上,四边形
为正方形,将
沿着边
旋转,使得
,如图②.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/20bf03eb-c5aa-47b8-af18-42755b8c370e.png?resizew=330)
(1)求证:
平面
;
(2)
是棱
的中点,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9186e4574ffe28e673724fcb019db208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/424269ceef173843aae76e39ecdf6111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33804bda15aa245e3a64dcc2e4c0b24f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97bb57534d77c2355aef18c9105c189d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d8b64ae5ebb831b1d03316e89f4aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96f3af5833b0cab2dff3e615c8790ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a618e2fa885d453e050c21bc05f8fed4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/20bf03eb-c5aa-47b8-af18-42755b8c370e.png?resizew=330)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f445af1ae136773cb338920552ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ab0137fe07fc29af8eae62bb8a8495.png)
您最近一年使用:0次
名校
6 . 如图所示,圆台的上、下底面圆半径分别为
和
,
为圆台的两条不同的母线.
;
(2)截面
与下底面所成的夹角大小为
,且截面截得圆台上底面圆的劣弧
的长度为
,求截面
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd6f4250ca6b1b9bce234a01f00d44d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c95c0160e73beb94a4a1cbc0168e9a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147ce46290b9aeb0092af30b2d3001c7.png)
(2)截面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a3d5d669ac76a2ffb07da81d949adf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/813b03f3d13783ee2cb12a81ce6fd07b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
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2024-01-26更新
|
1231次组卷
|
8卷引用:模块7 空间几何篇 第2讲:立体几何的截面问题【练】
(已下线)模块7 空间几何篇 第2讲:立体几何的截面问题【练】2024届高三新改革数学模拟预测训练一(九省联考题型)(已下线)第3套-复盘卷(已下线)微考点5-2 新高考新试卷结构立体几何解答题中与旋转体有关的问题湖南省长沙市长郡中学2024届高三下学期模拟(一)数学试卷湖南省邵阳市2024届高三第一次联考数学试题(已下线)2024年高考数学二轮复习测试卷(新题型,江苏专用)(已下线)信息必刷卷01(江苏专用,2024新题型)
名校
7 . 如图所示,四棱锥
的底面
是边长为1的菱形,
,
是
的中点,
,
,平面
平面
,点
到平面
的距离为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/b370a397-5f61-4a5a-989f-5eeb11c231ee.png?resizew=165)
(1)求证:
平面
.
(2)求平面
和平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ec435aa1401dbce7863b531bf2f3e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc532cfe64300cb3da9e04a307c957a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db27b7f29d7d01b2692f217bc3079fc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a26a7784c7419d8359fb119c8ecc03d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64eb31601464364be2baf4aa87404bcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/b370a397-5f61-4a5a-989f-5eeb11c231ee.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64eb31601464364be2baf4aa87404bcd.png)
您最近一年使用:0次
2024-01-23更新
|
957次组卷
|
3卷引用:辽宁省大连市部分学校2023-2024学年高二上学期期末考试数学试卷
2024·全国·模拟预测
解题方法
8 . 如图,已知四棱锥
的底面为菱形,且
,
,
,M是棱PD上的点,且PB与平面MAC平行.
(1)求证:
;
(2)若Q为棱PC上的动点,求MQ与平面PBC所成角的余弦值的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19e0ba32fcadd4114a3c52b52c3aea23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f14f698605a196cf83ccba6a601d0e2c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/3/0b89bfac-230c-4740-a7a2-8228ba498c5f.png?resizew=169)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b74837b473f275b811eae37cfd3f4bdb.png)
(2)若Q为棱PC上的动点,求MQ与平面PBC所成角的余弦值的最小值.
您最近一年使用:0次
2024·全国·模拟预测
解题方法
9 . 已知椭圆E:
的离心率为
,四个顶点围成的四边形面积为4.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/3/5d4a8918-bfc9-488d-a10b-c22ac93b2ff7.png?resizew=170)
(1)求椭圆E的方程;
(2)过点
作直线l与椭圆E交于A,B两点,与x轴交于点Q,若
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347b68f42934c74e0d759a67613a1da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/3/5d4a8918-bfc9-488d-a10b-c22ac93b2ff7.png?resizew=170)
(1)求椭圆E的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bf4addd4c1f1b81c9eaa07691064c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f90d75a671650b2ae97f105dfd7140d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32705e629d8b9187b53efeee6605af15.png)
您最近一年使用:0次
10 . 已知圆F:
,点
,点G是圆F上任意一点,线段EG的垂直平分线交直线FG于点T,点T的轨迹记为曲线C.
(1)求曲线C的方程;
(2)已知曲线C上一点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f47535c3fcbad74ea53b034bea523a1d.png)
,动圆N:
,且点M在圆N外,过点M作圆N的两条切线分别交曲线C于点A,B
①求证:直线AB的斜率为定值;
②若直线AB与
交于点Q,且
时,求直线AB的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/550d183b05000722c74baf25eb4a6741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dad483f961dc9d4c1516cf9f60138c3.png)
(1)求曲线C的方程;
(2)已知曲线C上一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f47535c3fcbad74ea53b034bea523a1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1477e0e4909036f7b2561083f7da3329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b56ebeda29ddc2618851709b54f7c3.png)
①求证:直线AB的斜率为定值;
②若直线AB与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
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2024-02-03更新
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6卷引用:山东省济南市2021-2022学年高二上学期期末数学试题