1 . 如图,在长方体
中,
,
,
,平面
截长方体得到一个矩形
,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/126a8fbf-6fc8-4f02-8c68-224c82fc58b1.png?resizew=168)
(1)求截面
把该长方体分成的两部分体积之比;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a317122488b47c2fb6b979984361ab50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35bf5bcb1621a5badd4f89fabbe48ab7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/126a8fbf-6fc8-4f02-8c68-224c82fc58b1.png?resizew=168)
(1)求截面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
2019-12-11更新
|
386次组卷
|
3卷引用:2017年上海嘉定区高考二模数学试题
2 . 如图,在圆锥
中,
为底面圆
的直径,点
为弧AB的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/7495dcd2-8abf-49b3-9b29-b77b2254505d.png?resizew=148)
(1)证明:
平面
;
(2)若点
为母线
的中点,求
与平面
所成的角.(结果用反三角函数表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab709684151600ffd28410a8b2ca5dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb94ec6bc4f73339687e4e66c6f79723.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/7495dcd2-8abf-49b3-9b29-b77b2254505d.png?resizew=148)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1ff2afbc771a6708ca771f450b1997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d52ef9715f821cb38c8c26ad08aad7a.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5c9ca3af3eb8bc486f7b3f29f5065eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d52ef9715f821cb38c8c26ad08aad7a.png)
您最近一年使用:0次
2019-04-14更新
|
267次组卷
|
3卷引用:2016届上海市浦东新区高三4月高考模拟(二模)数学试题
3 . 如图,三棱柱
中,
分别为棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/0d4c5a1b-fec7-4761-9c89-6457484bea31.png?resizew=196)
(1)在
上确定点M,使
平面
,并说明理由.
(2)若侧面
侧面
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a53471f676156b74d09f4b34cbcf37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dce21311bf50215101b605356358b9a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/0d4c5a1b-fec7-4761-9c89-6457484bea31.png?resizew=196)
(1)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac480d8d9d7821b62a603cf5cfda236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f49282e671435e499a78d26c7b81a711.png)
(2)若侧面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cdaadeae37736a1e6dd93fa1fe712f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f49282e671435e499a78d26c7b81a711.png)
您最近一年使用:0次
2019-03-27更新
|
340次组卷
|
2卷引用:2020届湖南省名师联盟高三上学期第一次模拟数学(理)试题
4 . 如图,
是圆柱体
的一条母线,
过底面圆的圆心
,
是圆
上不与
、
重合的任意一点,已知棱
,
,
.
与平面
所成角的大小;
(2)将四面体
绕母线
旋转一周,求
三边旋转过程中所围成的几何体的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/270ddac9587bf1ea553914cb69595ab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c24a968c73e960698a572ab01e3698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
(2)将四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f8f01137e92c0f2e63467036ae9cce.png)
您最近一年使用:0次
2020-01-16更新
|
486次组卷
|
6卷引用:上海市七宝中学2022届高三高考冲刺模拟1数学试题
上海市七宝中学2022届高三高考冲刺模拟1数学试题2015届上海市闸北区高三下学期期中练习(二模)理科数学试卷(已下线)上海市华东师大二附中2017-2018学年高三上学期期中数学试题上海市上海交通大学附属中学2021届高三上学期期末数学试题上海市松江二中2023届高三下学期5月月考数学试题(已下线)专题03空间向量及其应用--高二期末考点大串讲(沪教版2020选修)
名校
5 . 如图长方体
的
,底面ABCD的周长为4,E为
的中点.
(Ⅰ)判断两直线
与AD的位置关系,并给予证明:
(Ⅱ)当长方体
体积最大时,求直线
与平面
所成角
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a56baf43ffdf67bc8460856e31fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7d857811cbd619f868d951aa7a0ab8.png)
(Ⅰ)判断两直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becf2941e15d668d93ea6ed980afd0ba.png)
(Ⅱ)当长方体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7d857811cbd619f868d951aa7a0ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/ee927fb1-c350-4137-ac3c-f4dfdf2776fb.png?resizew=196)
您最近一年使用:0次
2018-09-30更新
|
433次组卷
|
4卷引用:江苏省2021届高三新高考高考模拟样卷数学试题
名校
解题方法
6 . 如图,在底面为等边三角形的斜三棱柱
中,
,四边形
为矩形,过
作与直线
平行的平面
交
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/5c0c767d-4696-44d2-9108-c7ee5874faa2.png?resizew=289)
(1)证明:
;
(2)若直线
与底面
所成的角为
,求二面角
的余弦值 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3ad459759b3a4ffa2550cddc9c6b0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9961e091f180e964a962adf6916f33c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/5c0c767d-4696-44d2-9108-c7ee5874faa2.png?resizew=289)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05af9606b7540ab585d7556be2ebafe.png)
您最近一年使用:0次
7 . 如图,在圆锥
中,已知
,⊙
的直径
,点
在
上,且
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2018/6/10/1964447438053376/1967894572949504/STEM/13ff8ae6d8ba4254acdcc41adc5bd919.png?resizew=233)
(Ⅰ)证明:
平面
;
(Ⅱ)求直线
和平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e89e99ab9c1ece0cc5c3bbabaa97de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.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/3f97827d23a27efaf3d639f3abe430c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2018/6/10/1964447438053376/1967894572949504/STEM/13ff8ae6d8ba4254acdcc41adc5bd919.png?resizew=233)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15b63176f43bc7a0654d0f6f45e7429.png)
(Ⅱ)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
8 . 如图,四棱锥
的底面
是边长为
的菱形,
,点
是棱
的中点,
平面
.
![](https://img.xkw.com/dksih/QBM/2018/6/11/1965125875916800/null/STEM/37e629477e64471da496e22cdd1b4e3a.png?resizew=174)
(1)证明:
平面
;
(2)当
长度为多少时,直线
与平面
所成角的正弦值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7719c836a63a80b40efac448d0c6dd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d260c4df7b0dc180af6980d21f3371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4564baf209de77802d46cda82995c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://img.xkw.com/dksih/QBM/2018/6/11/1965125875916800/null/STEM/37e629477e64471da496e22cdd1b4e3a.png?resizew=174)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1666b45ed176d648dd1764f4a2dbd73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/576cff1447fca473df4bf4a9245e44fb.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e61620a272dada8d4b9a9fab6379dfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1165830b314a0dab65ea267e82bd3f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/840798a31aba0783f96584e0ad7c0d2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2f293bcb1eefa85ca4ced96c0cf55b.png)
您最近一年使用:0次
2018-06-14更新
|
986次组卷
|
4卷引用:【全国百强校】浙江省台州中学2018届高三模拟考试数学试题
9 . 在四棱锥P–ABCD中,底面ABCD是边长为6的正方形,PD平面ABCD,PD=8.
(1) 求PB与平面ABCD所成角的大小;
(2) 求异面直线PB与DC所成角的大小.
(1) 求PB与平面ABCD所成角的大小;
(2) 求异面直线PB与DC所成角的大小.
![](https://img.xkw.com/dksih/QBM/2018/4/13/1923454485700608/1924463323504640/STEM/73379beea3fc4abfb822d3fad5e4fd39.png?resizew=134)
您最近一年使用:0次
2018-04-15更新
|
840次组卷
|
2卷引用:上海市金山区2018届高三下学期质量监控(二模)数学试题
10 . 如图,三棱柱
中,侧面
为
的菱形,
.
![](https://img.xkw.com/dksih/QBM/2018/3/8/1897678751105024/1898582824738816/STEM/381cd48f4f384ed989c229263fa7d0d2.png?resizew=227)
(1)证明:平面
平面
.
(2)若
,直线
与平面
所成的角为
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f2e238b2757353026133bbe495645e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d31a4ddb10768e9e7868d0c34c425f.png)
![](https://img.xkw.com/dksih/QBM/2018/3/8/1897678751105024/1898582824738816/STEM/381cd48f4f384ed989c229263fa7d0d2.png?resizew=227)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3a59d7bf91a7540e35ce0011ad9b97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7870cee007535b979d35bc7feab75616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b94e97d085cea077cb82a0b7d2f523e.png)
您最近一年使用:0次
2018-03-09更新
|
579次组卷
|
3卷引用:河北省石家庄2018届高三教学质量检测(二)数学(理)试题