解题方法
1 . 如图,在长方体
中,
,
,
与
交于点
,
的中点为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/fc342ac1-48a3-43ab-81f6-2bb71cb2651d.png?resizew=182)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值;
(3)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8700c9f9c9e05c0c7a0ef5ba49a456cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/fc342ac1-48a3-43ab-81f6-2bb71cb2651d.png?resizew=182)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c7c261740ac2ae26715e1298ca278a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212a67f115d1cbe69f100b489babe5f8.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554b3b4c5ce7aca81becc07ed4903736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6684d8fe0d6da7564247e47b948e3997.png)
(3)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f5ce42fe8ea626c297e3b2a2ab95149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6684d8fe0d6da7564247e47b948e3997.png)
您最近一年使用:0次
2023-01-05更新
|
296次组卷
|
2卷引用:天津市河北区2022-2023学年高二上学期期末数学试题
名校
解题方法
2 . 设椭圆
的右顶点为A,上顶点为B.已知椭圆的离心率为
,
.
(1)求椭圆的方程;
(2)设直线l:
与椭圆交于P,Q两点,l与直线AB交于点M,且点P,M均在第四象限.若
,求k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe2c533dbc23a34518f72f3cb14f330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/704b2a2a5f99225329f7d950d5825f53.png)
(1)求椭圆的方程;
(2)设直线l:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2761aa85c2256bb59665e1d3242dcde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7970dccde65609fdfef617402f9a35e.png)
您最近一年使用:0次
2022-12-15更新
|
1210次组卷
|
6卷引用:天津市第二中学2022-2023学年高二上学期12月学情调查数学试题
3 . 如图,直三棱柱
的底面为直角三角形,
,E,F分别为AB,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/9c1280ef-bb2a-484e-8f60-ff43e1fa6baa.png?resizew=114)
(1)求证:
平面
;
(2)求直线BF与平面
所成角的正弦值;
(3)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b66218bbfb24acee762d795831e42c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/9c1280ef-bb2a-484e-8f60-ff43e1fa6baa.png?resizew=114)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
(2)求直线BF与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
(3)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9961e091f180e964a962adf6916f33c8.png)
您最近一年使用:0次
解题方法
4 . 已知椭圆
的长轴长是
,短轴长是
,过右焦点
的直线
与椭圆相交于
两点.
(1)求椭圆的方程及离心率;
(2)若直线
的倾斜角为
,求线段
的长;
(3)若
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10e8abf8690e4b129466ddb918bcc94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.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/f6bce3d91ca23b86d8c6625f2632e437.png)
(1)求椭圆的方程及离心率;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba693ccc34401cd4df1eaf534bbc2df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
解题方法
5 . 如图,三棱柱
中,
平面
,M是
的中点,N是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/6cc108c5-67f5-4515-a0dd-a7d22ec90a18.png?resizew=165)
(1)求证:
∥平面
;
(2)求直线
与平面
所成角的正弦值;
(3)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d01df0ce084ed80ec9cb1a7a97e71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/6cc108c5-67f5-4515-a0dd-a7d22ec90a18.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee16c91119c5601a7c93a6642c95e7f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3653ada76ba0c8afe9d57c8e7832c6ed.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3653ada76ba0c8afe9d57c8e7832c6ed.png)
(3)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3653ada76ba0c8afe9d57c8e7832c6ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
您最近一年使用:0次
2022-11-16更新
|
541次组卷
|
3卷引用:天津市河北区2022-2023学年高二上学期期中数学试题
6 . 已知向量
.
(1)求
;
(2)求
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31cc00a13f8951a0d9817cad28a1302.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b714d7bdaaa6635fe254d8ade3b884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9c88190fb57e877047c8cdc3b564ba.png)
您最近一年使用:0次
名校
7 . 如图,在四棱锥
中,平面
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/8fee69d0-04d0-4743-9cfb-dff700246615.png?resizew=183)
(1)求证:
;
(2)求平面
与平面
夹角的余弦值;
(3)若点E在棱
上,且
平面
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6be2b61f4a38e2ee2c1a01e00b3ae6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553d5269397c5cf0909c734464e1b472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c73eb061b58805586c56ed73f7034fb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6503443cca2402310e480e3be0c47f05.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/8fee69d0-04d0-4743-9cfb-dff700246615.png?resizew=183)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c209827e914ab17f5bc2e6fab044a05.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)若点E在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137fcdac119eff6ac5990b6d201615df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次
2022-10-21更新
|
1669次组卷
|
12卷引用:天津市第二中学2022届高三下学期5月线上测试数学试题
天津市第二中学2022届高三下学期5月线上测试数学试题陕西省渭南市大荔县2021-2022学年高二上学期期末理科数学试题天津市西青区杨柳青第一中学2022届高三下学期第二次适应性测试数学试题江苏省盐城市2021-2022学年高二下学期期末模拟数学试题北京市交通大学附属中学2023届高三上学期12月诊断练习数学试题重庆市第八中学校2022-2023学年高二上学期期中复习数学试题北京市丰台区2018年高三年级一模数学试题(理)北京市城六区2018届高三一模理科数学解答题分类汇编之立体几何北京市第二十二中学2019-2020学年第一学期期中考试高三数学辽宁省沈阳市市级重点协作校2021-2022学年上学期高二数学期中联考数学试题北京市顺义区第一中学2021-2022学年高二上学期期中考试数学试题(已下线)模块十一 立体几何-2
名校
解题方法
8 . 设
分别是椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c91e805ed85d924f9390dd934f606ba.png)
的左、右焦点,
是
上一点,
与
轴垂直.直线
与
的另一个交点为
,且直线
的斜率为
.
(1)求椭圆
的离心率;
(2)设
是椭圆
的上顶点,过
任作两条互相垂直的直线分别交椭圆
于
两点,证明直线
过定点,并求出定点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c91e805ed85d924f9390dd934f606ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7334bdc080ea1ee4456889f56416a318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183b6a0cef4256c9696a5bca31053da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b67528f875a6d4bac8bbf784f7b66a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821309f088a175c00dc0f4828334503d.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bdfbae913ff7ff8caaefcaacf8c20ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5725e3e4eb05b32563b4ee1d473756c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2022-10-06更新
|
1623次组卷
|
5卷引用:天津外国语大学附属外国语学校2023届高三上学期10月月考数学试题
天津外国语大学附属外国语学校2023届高三上学期10月月考数学试题河南省顶级名校2022-2023学年高三上学期第一次月考试卷数学(文)试题(已下线)专题31 圆锥曲线的垂直弦问题-1(已下线)重难点突破08 圆锥曲线的垂直弦问题 (八大题型)广西百色市平果市铝城中学2024届高三下学期4月月考数学试卷
名校
9 . 如图,
平面
,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/881fafeb-0627-4531-b84f-6b889496ce4a.png?resizew=198)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值;
(3)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883200c4d4e82a5411064a644aabfe33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0ca2e3660659b7ecbb96f80c0539f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88dac2c17c765517c2163ab43bbe1038.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/881fafeb-0627-4531-b84f-6b889496ce4a.png?resizew=198)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d888c0b616792a2c41ff180de99fbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(3)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
您最近一年使用:0次
2022-06-01更新
|
1199次组卷
|
8卷引用:天津外国语大学附属外国语学校2023届高三上学期10月月考数学试题
天津外国语大学附属外国语学校2023届高三上学期10月月考数学试题天津市武清区杨村第一中学2022届高三下学期高考第一次热身练数学试题(已下线)2022年高考天津数学高考真题变式题7-9题天津市南开中学2023届高三上学期统练2数学试题(已下线)2022年高考天津数学高考真题变式题16-18题天津市南仓中学2022-2023学年高三上学期第一次教学质量过程性监测与诊断数学试题天津市第二十五中学2022-2023学年高三上学期期末数学试题天津市第二南开学校2022-2023学年高三下学期开学学情调查数学试题
名校
10 . 在如图所示的几何体中,四边形
是正方形,四边形
是梯形,
,
,平面
平面
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/f6d970a9-8715-4778-9b62-2c4d323ec81c.png?resizew=170)
(1)求证:
平面
;
(2)求二面角
的大小;
(3)已知点
在棱
上,且异面直线
与
所成角的余弦值为
,求点A到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7bce6eba5d07a34f24c5370c580ac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/133659fd88416259e3b99eaf5751b98d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a713da89c106face0387c44b9c62ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c032261d2f887de100ed40e8fc676e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ea2d880b20542c2d813f95c683403e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/f6d970a9-8715-4778-9b62-2c4d323ec81c.png?resizew=170)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7bcd16691fdd6c2f280ed20a72f2cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e738d31d5d2d20134ed862d404f3fb5d.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7246b49f9c9b524db7a8929133cb4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83b7679d26c1041b17e43100775ebc2a.png)
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2022-06-01更新
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4卷引用:天津外国语大学附属外国语学校2022-2023学年高三上学期第二次月考数学试题
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