1 . 如图所示,在三棱锥
中,
,
,
两两垂直,
,
,点
为
的中点.
(1)若过点
的平面与直线
垂直,分别与棱
,
相交于点
,在图中画出该截面多边形,并说明
点的位置(不要求证明);
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d55095cd1376f1714a918b3f78371db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f656e1d1f68954e5f06de8958f6a9310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://img.xkw.com/dksih/QBM/2016/3/14/1572538005495808/1572538011222016/STEM/d8149bbb99db4810b0959f60f43a15a1.png?resizew=317)
您最近一年使用:0次
2016-12-04更新
|
1153次组卷
|
4卷引用:贵州省遵义航天高级中学2018届高三第一次模拟考试(9月月考)(文)数学试题
名校
2 . 如图,在
中,
边上的高
所在的直线方程为
,直线
与直线
垂直,若点
的坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/30/d05a5101-9227-4d31-a042-409c8e890ebf.jpg?resizew=113)
求(1)
和
所在直线的方程;
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b2caf6048aa0807d8ba591963ff6e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/568776c556a745cf0824a3ce369d1c23.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/30/d05a5101-9227-4d31-a042-409c8e890ebf.jpg?resizew=113)
求(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2017-12-16更新
|
767次组卷
|
5卷引用:贵州省遵义市湄潭县湄江中学2017-2018学年高二上学期第三次月考数学(理)试题
贵州省遵义市湄潭县湄江中学2017-2018学年高二上学期第三次月考数学(理)试题宁夏石嘴山市第三中学2017-2018学年高一(创新班)上学期期末数学试题安徽师范大学附属中学2022-2023学年高二上学期期中数学试题(已下线)期中真题必刷易错60题(22个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)(已下线)期中真题必刷压轴60题(18个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)
名校
3 . 已知以点
为圆心的圆与直线
相切.
(1)求圆A的方程;
(2)过点
的直线l与圆A相交于M、N两点, 当
时,求直线l方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99ce0fdd3a34df8d5e913b7b9f6f3fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b1df39b305dd1bd971be4eb68d52749.png)
(1)求圆A的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4bc333cee094e9dd8f1f3ff86adc95f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe3080ed8cb377910703dd956207fa9.png)
您最近一年使用:0次
2017-10-27更新
|
867次组卷
|
7卷引用:贵州省毕节梁才学校2017-2018学年高二上学期第一次月考(理)数学试卷
解题方法
4 . 如图,四棱柱
中,侧棱
底面
,所有棱长都为2,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/b2dd4cec-eb6c-471b-92b5-08f3bc693c66.png?resizew=155)
(1)证明:
平面
.
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6906f59d09ce31956d6f5ea2b23fc77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/b2dd4cec-eb6c-471b-92b5-08f3bc693c66.png?resizew=155)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554923047631d16320c2ba39abeee99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65277734669566578cbb7d690bb200fb.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926584088b939200d88e64318f2d4e6c.png)
您最近一年使用:0次
名校
5 . 如图,在
中,
边上的高
所在的直线方程为
,
的平分线所在的直线方程为
与
相交于点
,若点
的坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/d3c1ab1b-96e1-49fd-ac13-7d2fe05c8bbf.png?resizew=163)
(1)分别求
和
所在直线的方程;
(2)求
点坐标和
所在直线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b2caf6048aa0807d8ba591963ff6e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a7df955fc17e92fd86302f8c34664a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/d3c1ab1b-96e1-49fd-ac13-7d2fe05c8bbf.png?resizew=163)
(1)分别求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
6 . 如图:三棱柱
的所有棱长均相等,
,
为
的中点.
(1)求证:平面
⊥平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede6a60cad0e0b58e1549fda6e085719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95b0ddfedb5874d67af2e932b1045e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c640abbdc470479407da1ae2aa80fb.png)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c967343de517ab9dfed75f1a436d1e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16dd27701a0a9849b58d39ae10623763.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43c4ad6c77a6459a37bc398ecd5e5253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb258f59bd5ea4e72ef2845edfb2330.png)
![](https://img.xkw.com/dksih/QBM/2017/3/7/1638724949704704/1642975188000768/STEM/84d0679d444c4a8cae01cf2817a830e5.png?resizew=265)
您最近一年使用:0次
2017-03-13更新
|
702次组卷
|
2卷引用:2017届贵州省黔东南州高三下学期高考模拟考试数学(文)试卷
10-11高三上·江苏南京·期中
名校
解题方法
7 . 如图,
为正三角形,
平面
,
,且
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2010/11/29/1569919404867584/1569919410159616/STEM/2bc9587a5c3b4b79bce6ede911e835c7.png?resizew=179)
求证:(1)
平面
;
(2)
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/477dc280b77f5640565dbc0ddf24460a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fdd872d41982e7b50ed2aba66595f8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d379d3509a3ae0b9a97dd62cb0e5a05d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://img.xkw.com/dksih/QBM/2010/11/29/1569919404867584/1569919410159616/STEM/2bc9587a5c3b4b79bce6ede911e835c7.png?resizew=179)
求证:(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826bf6fa3706921b77ad0eb4fcc206bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f09ad78d4eccd1a9c9ccd3c4af79c79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
您最近一年使用:0次
8 . 如图,半圆
的直径
长为2,
是半圆
上除
外的一个动点,矩形
所在的平面垂直于该半圆所在的平面,且
,设平面
与半圆弧的另一个交点为
.
![](https://img.xkw.com/dksih/QBM/2017/5/9/1683233519460352/1684010968178688/STEM/725ea3b121b744938536c1d10d3a055e.png?resizew=125)
(Ⅰ)求证:
;
(Ⅱ)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3523e82a3ffe04a5b3a3e42868fd7905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2977ae4bfa32de8c6f0fb136205c4fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2017/5/9/1683233519460352/1684010968178688/STEM/725ea3b121b744938536c1d10d3a055e.png?resizew=125)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd957c76af2cc9837d2ed8acd66173bd.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4901a7eda97d6a307db76c4fb196ba3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03962e215c034bbe273c45843e212fa5.png)
您最近一年使用:0次
2017-04-02更新
|
1135次组卷
|
2卷引用:2017届贵州省贵阳市第一中学高三下学期第六次适应性考试数学(文)试卷
9 . 如图
,
是圆柱的上、下底面圆的直径,
是边长为2的正方形,
是底面圆周上不同于
两点的一点,
.
![](https://img.xkw.com/dksih/QBM/2017/9/19/1777177656385536/1777396726784000/STEM/784ff24931954655832ef26ab2b7b587.png?resizew=132)
(1)求证:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1364213f546b37f8764ddcb59e36ae4.png)
![](https://img.xkw.com/dksih/QBM/2017/9/19/1777177656385536/1777396726784000/STEM/784ff24931954655832ef26ab2b7b587.png?resizew=132)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f332555e65843f32f4c623098c6adc72.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24db75f4d450674182ccfe3236aabdd3.png)
您最近一年使用:0次
2017-09-02更新
|
827次组卷
|
4卷引用:贵州省贵阳市普通高中2018届高三8月摸底考试数学(理)试题
贵州省贵阳市普通高中2018届高三8月摸底考试数学(理)试题贵州省遵义市南白中学2018届高三上学期第一次月考数学(理)试题(已下线)2018年10月14日 《每日一题》一轮复习理数-每周一测西藏昌都市第一高级中学2021届高三上学期期末考试数学(理)试题
名校
解题方法
10 . 如图所示,在长方体
中,底面
是边长为1的正方形,
,
为棱
上的一个动点.
![](https://img.xkw.com/dksih/QBM/2017/4/27/1674916943618048/1678848488505344/STEM/0f792b184dca4b55a06798dc39802050.png?resizew=137)
(1)求三棱锥
的体积;
(2)当
取得最小值时,求证:
平面
.
![](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/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/2017/4/27/1674916943618048/1678848488505344/STEM/0f792b184dca4b55a06798dc39802050.png?resizew=137)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d5f326719db4c0edb66103993043aa8.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138e0045398b0f40258ae51abe8b6f72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38278d5bacffa7f57ae741d431b72b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
2017-05-03更新
|
741次组卷
|
2卷引用:贵州省贵阳市第一中学、凯里市第一中学2017届高三下学期高考适应性月考卷(七)数学(文)试题