已知正四棱柱
中,
,
、
分别是棱
、
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/2229c393-3d4e-46bc-8192-679fbc552076.png?resizew=176)
(1)若
,求直线
与直线
所成的角;
(2)若
,设点
到平面
的距离为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262480ffb55b7617f44b63f130c154a.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26b4f0b6a69ee5192370239c6fdd7b3d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/2229c393-3d4e-46bc-8192-679fbc552076.png?resizew=176)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ad3a1ea6790177130e16c2124984087.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba9e20d667d04bf3ee7f55cc795ce01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
22-23高三上·上海虹口·期中 查看更多[2]
更新时间:2022-11-03 15:13:17
|
相似题推荐
【推荐1】如图,在
中,
,且
,
,将
绕直角边
旋转
到
处,得到圆锥的一部分,点
是底面圆弧
(不含端点)上的一个动点.
,使得
?若存在,求出
的大小;若不存在,请说明理由;
(2)当四棱锥
体积最大时,求
沿圆锥侧面到达点
的最短距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c38c41700c823af569af37a652caac96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbb05b8b630052ff544249ebd72d95d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0211da37e92f915e781691296578ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbfcae2cecc98e2d6c16dde6d3ec1c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157b42da58d55daad27d98b2fec15ff.png)
(2)当四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cc1bc8449eeafb19ddde59d8f3c77db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
您最近一年使用:0次
【推荐2】把一个半径为3的圆,剪成三个完全一样的扇形(如图1所示),分别卷成相同的无底圆锥(衔接处忽略不计)
![](https://img.xkw.com/dksih/QBM/2022/4/24/2964980874887168/2970554110410752/STEM/745addf5-0cb0-4866-ae75-583afed0ffc2.png?resizew=320)
(1)求一个圆锥的体积;
(2)设这三个圆锥的底面的圆心分别为
,
,
,将三个圆锥的顶点重合并紧贴一起,记顶点为P(如图2所示),求三棱锥
的表面积.
![](https://img.xkw.com/dksih/QBM/2022/4/24/2964980874887168/2970554110410752/STEM/745addf5-0cb0-4866-ae75-583afed0ffc2.png?resizew=320)
(1)求一个圆锥的体积;
(2)设这三个圆锥的底面的圆心分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dacb04fa29178c0af4353e4369a7e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bf43871fa2ddf33b15a4a417133f62.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】如图1,在
中,
,
是斜边
上的高,沿
将
折成
的二面角
,如图2.
![](https://img.xkw.com/dksih/QBM/2016/12/2/1573194139901952/1573194146086912/STEM/4a0a5297f6154d2f93c1263679a413ae.png?resizew=308)
(Ⅰ)证明:平面
⊥平面
;
(Ⅱ)在图2中,设
为
的中点,求异面直线
与
所成的角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd29cc627d76412c236aac6b29fa0fdf.png)
![](https://img.xkw.com/dksih/QBM/2016/12/2/1573194139901952/1573194146086912/STEM/4a0a5297f6154d2f93c1263679a413ae.png?resizew=308)
(Ⅰ)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(Ⅱ)在图2中,设
![](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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图所示,在直角梯形
中,
,四边形
是正方形,且平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83af82e3022b39e18063b55550599e9.png)
平面
,
为
的中点,
![](https://img.xkw.com/dksih/QBM/2017/5/7/1682053811396608/1683528872214528/STEM/9b425b4042b24477b42f4ea812705bcb.png?resizew=105)
(I)求证:
;
(2)求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94aad4c2109f60fcbf5488a545b16c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c195a3e1e4097872e49663fdbc80a9cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83af82e3022b39e18063b55550599e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83af82e3022b39e18063b55550599e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94aad4c2109f60fcbf5488a545b16c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bcdd8c05cd04f46c6f4ba8aa3cb1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9a9b4df46ee86aaa7442580138d47e.png)
![](https://img.xkw.com/dksih/QBM/2017/5/7/1682053811396608/1683528872214528/STEM/9b425b4042b24477b42f4ea812705bcb.png?resizew=105)
(I)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ccbcae0c32761f5994dae209cfa2a53.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850f8372ededc0bbef29ed8383da9775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6580124c273452a2ab0fb0469d9e3e.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐1】如图,在四棱锥
中,
,
,
,平面
平面ABCD.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/d3fcbb62-66d4-44cb-a135-eea80c3adfc1.png?resizew=169)
(1)证明:
平面PDC.
(2)若E是棱PA的中点,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
平面PCD,求点D到平面PAB的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25267f04873339a85a74c29e77ec2fc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0717c99cf54077d805c71254fa3230d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77eef0eaf87646c1692bdae799d194d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/d3fcbb62-66d4-44cb-a135-eea80c3adfc1.png?resizew=169)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95475bfc06e884754eb4a455c3f434e.png)
(2)若E是棱PA的中点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
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【推荐2】如图,四棱锥PABCD中,底面ABCD为矩形,PA⊥底面ABCD,E为PD的中点.
![](https://img.xkw.com/dksih/QBM/2022/3/25/2943968456589312/2944605772513280/STEM/22d795e016744599b50b4384388b1863.png?resizew=159)
(1)证明:PB
平面AEC;
(2)证明:平面PAB⊥平面PAD;
(3)设AP=1,
,三棱锥P-ABD的体积
,求点A到平面PBC的距离.
![](https://img.xkw.com/dksih/QBM/2022/3/25/2943968456589312/2944605772513280/STEM/22d795e016744599b50b4384388b1863.png?resizew=159)
(1)证明:PB
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
(2)证明:平面PAB⊥平面PAD;
(3)设AP=1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f63d22f5172eebabd077e24726c3d230.png)
您最近一年使用:0次