名校
解题方法
1 . 如图,四棱锥
中,底面
为矩形,
平面
,设
为
的中点.
![](https://img.xkw.com/dksih/QBM/2016/11/8/1573132249620480/1573132255846400/STEM/732156f6-bbde-4111-8d4c-e88c1df70a79.png?resizew=311)
(1)证明:
平面
;
(2)设异面直线
与
所成角为45°,
,求三棱锥
的体积.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.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/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/2016/11/8/1573132249620480/1573132255846400/STEM/732156f6-bbde-4111-8d4c-e88c1df70a79.png?resizew=311)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30067b7b236d17af8a462f96a58d11bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e2da608b66c9aee03e2503388ba4fd.png)
(2)设异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1412048bf1422752f89049f5521095a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b565e518d475a50358fedff2f0bb8dec.png)
您最近一年使用:0次
2016-12-05更新
|
906次组卷
|
7卷引用:2016-2017学年安徽合肥一中高二上月考一数学(理)试卷
解题方法
2 . 如图所示,在四棱锥
中,底面四边形
为等腰梯形,
为
中点,
平面
,
.
![](https://img.xkw.com/dksih/QBM/2016/10/18/1573075577020416/1573075583287296/STEM/87646ac9d00d4b949be327dbbcd6de70.png?resizew=181)
(1)证明:平面
平面
;
(2)若直线
与平面
所成的角为30°,求二面角
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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cdb50ad574349b4e082532dba781ca.png)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1573075577020416/1573075583287296/STEM/87646ac9d00d4b949be327dbbcd6de70.png?resizew=181)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54cf75bbfc9db93d27937c8b8e977b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c66edca50eace2fad71ef59d73c662.png)
您最近一年使用:0次
名校
3 . 如图,已知四棱锥P-ABCD,
底面
,且底面ABCD是边长为2的正方形,M、N分别为PB、PC的中点.
(Ⅰ)证明:MN//平面PAD;
(Ⅱ)若PA与平面ABCD所成的角为
,求四棱锥P-ABCD的体积V.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e458f4503e211b542f6f30c8a34eaca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(Ⅰ)证明:MN//平面PAD;
(Ⅱ)若PA与平面ABCD所成的角为
![](https://img.xkw.com/dksih/QBM/2016/10/9/1573058539986944/1573058545385472/STEM/98256e4ea13848bb8f953a7faf847ce1.png)
![](https://img.xkw.com/dksih/QBM/2016/10/9/1573058539986944/1573058545385472/STEM/21747bc35ac24d0cb83f14245e9de198.png)
您最近一年使用:0次
2016-12-04更新
|
558次组卷
|
5卷引用:四川省广安代市中学校2021-2022学年高二上学期第一次月考数学(文)试题
4 . 如图,在四棱锥P-ABCD中,AD∥BC,
ADC=
PAB=90°,BC=CD=
AD.E为棱AD的中点,异面直线PA与CD所成的角为90°.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/f86b6237-52ef-47bb-9e55-9c2b3b6e24f1.png?resizew=185)
(I)在平面PAB内找一点M,使得直线CM∥平面PBE,并说明理由;
(II)若二面角P-CD-A的大小为45°,求直线PA与平面PCE所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665ffcdb7c57534dc184cc840471f2f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665ffcdb7c57534dc184cc840471f2f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/f86b6237-52ef-47bb-9e55-9c2b3b6e24f1.png?resizew=185)
(I)在平面PAB内找一点M,使得直线CM∥平面PBE,并说明理由;
(II)若二面角P-CD-A的大小为45°,求直线PA与平面PCE所成角的正弦值.
您最近一年使用:0次
2016-12-04更新
|
7095次组卷
|
31卷引用:上海市华东师范大学第二附属中学2018-2019学年高二3月月考数学试题
(已下线)上海市华东师范大学第二附属中学2018-2019学年高二3月月考数学试题(已下线)上海市华东师范大学第二附属中学2018-2019学年高二下学期3月月考数学试题(已下线)上海市华东师范大学第二附属中学2018-2019学年高二下学期3月检测数学试题上海市上海交通大学附属中学2017届高三上学期摸底考试数学试题2016年全国普通高等学校招生统一考试理科数学(四川卷精编版)四川省棠湖中学2017-2018学年高二下学期开学考试数学(理)试题苏教版高中数学 高三二轮 专题23 立体几何中的向量方法及抛物线 测试四川省宜宾市第四中学2018届高三高考适应性考试数学(理)试题(已下线)章末质量检测2 空间向量与立体几何-2018年数学同步优化指导(北师大版选修2-1)智能测评与辅导[理]-空间中的点、直线、平面的位置关系和球上海市格致中学2019-2020学年高三上学期期中数学试题天津市2020届数学模拟试题人教A版(2019) 必修第二册 逆袭之路 第八章 立体几何初步 本章整合提升专题11.8 空间向量与立体几何(练)-江苏版《2020年高考一轮复习讲练测》2020届山西省大同市第一中学高三一模数学(理)试题(已下线)专题04 立体几何的探索性问题(第三篇)-备战2020年高考数学大题精做之解答题题型全覆盖(已下线)专题17 立体几何综合-五年(2016-2020)高考数学(文)真题分项(已下线)专题17 立体几何综合-五年(2016-2020)高考数学(理)真题分项(已下线)专题02+空间向量与立体几何大题专项练习-2020-2021学年【补习教材·寒假作业】高二数学(人教A版2019)(已下线)专题17+空间向量与立体几何大题专项练习-2020-2021学年【补习教材·寒假作业】高二数学(理)(人教A版)(已下线)专题10 立体几何线面位置关系及空间角的计算 第一篇 热点、难点突破篇(练)-2021年高考数学二轮复习讲练测(浙江专用)江苏省南京师范大学附属中学新高考方向卷2020-2021学年高一下学期期末数学试题江苏省南通市2020-2021学年高一下学期5月期末模拟测试数学试题江苏省南通市海安高级中学2020-2021学年高二下学期期末数学试题广东省佛山市顺德区罗定邦中学2020-2021学年高二上学期期中数学试题河南省许昌市2021-2022学年高二上学期期末数学理科试题福建省福州第三中学2021-2022学年高一下学期期末考试数学试题(已下线)专题17 空间向量与立体几何大题专项练习(已下线)2016年全国普通高等学校招生统一考试理科数学(四川卷参考版)辽宁省沈阳市东北育才学校2023届高三数学考前最后一模试题(已下线)专题23 立体几何解答题(理科)-1
5 . 如图,梯形
中,
,
分别是
的中点,矩形
所在的平面与
所在的平面互相垂直,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/11/f3243df4-a44d-4b2a-995f-0be43126b6af.png?resizew=208)
(1)证明:
平面
;
(2)证明:
平面
;
(3)若二面角
为
,求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59ebe3c8b6c940ffb6bd6997ccbfa645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef19f98e86ae7504671413780b3b1a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7d1725157cac2eab7c0f4ca41a9409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec57c3afb55f97caf50013377b360db.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/11/f3243df4-a44d-4b2a-995f-0be43126b6af.png?resizew=208)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a22d6b860f06fe23618b0d3de6768fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/603c7e98deecdba0cf3773757a9b8304.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280247d7df395bb9ea78c51e67b458d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c93a34cbd4c0dc198b74524c0e05a10.png)
(3)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a009c8e2f88bab492e526ae5eb0b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/603c7e98deecdba0cf3773757a9b8304.png)
您最近一年使用:0次
6 . 如图平行四边形
中,
,
为
边的中点,沿
将
折起使得平面
平面
.
![](https://img.xkw.com/dksih/QBM/2016/5/12/1572632538619904/1572632544854016/STEM/a8ae831109c44cc2b7a6893ccc802778.png?resizew=537)
(1)求四棱锥
的体积;
(2)求折起后直线
与平面
所成的角的正弦.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441c330f09b8f6ea42e67cf40c70ea38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8045b729b7f257861057191a8a2388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec9d78d523614109d391aaa899261806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69eab2828488f68c5992385e8d0e8717.png)
![](https://img.xkw.com/dksih/QBM/2016/5/12/1572632538619904/1572632544854016/STEM/a8ae831109c44cc2b7a6893ccc802778.png?resizew=537)
(1)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31a68df7d5bfe8f434b7306b5626c4cf.png)
(2)求折起后直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bdef2e7a7929ad6190302ab44c46c0.png)
您最近一年使用:0次
解题方法
7 . 如图,正方体
中,E为AB中点,F为正方形BCC1B1的中心.
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572466994380800/1572467000320000/STEM/d04e0409-e531-4f3a-a17f-e4d76b1f0773.png?resizew=368)
(1)求直线EF与平面ABCD所成角的正切值;
(2)求异面直线A1C与EF所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572466994380800/1572467000320000/STEM/d04e0409-e531-4f3a-a17f-e4d76b1f0773.png?resizew=368)
(1)求直线EF与平面ABCD所成角的正切值;
(2)求异面直线A1C与EF所成角的余弦值.
您最近一年使用:0次
2016-12-04更新
|
470次组卷
|
4卷引用:2015-2016学年云南省昭通市云天化中学高二上12月月考理科数学卷
8 . 如图,已知正方形
和矩形
所在的平面互相垂直,
,
,
是线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/6/64f61548-2ba0-4948-a859-335b48349790.png?resizew=238)
(1)求三棱锥
的体积;
(2)求
与平面
所成的角大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0cee0f36dc452e58086832c0152b641.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/6/64f61548-2ba0-4948-a859-335b48349790.png?resizew=238)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b635e62c3b1f4a57feac8d22be84ee.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
解题方法
9 . 如图,在平行四边形
中,
,
,
为
的中点,将
沿直线
折起到
的位置,使平面
平面
.
![](https://img.xkw.com/dksih/QBM/2015/12/28/1572399135080448/1572399140995072/STEM/3d1dd41f23a44cd7b5ff686d05e3a639.png?resizew=176)
(1)证明:CE
PD;
(2)设
、
分别为
、
的中点,求直线
与平面
所成的角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c4e4a162f12d12a082b8d8fdd1aeab9.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cff7399ecc698e2fb415147c96d0d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac48b9ac8efbf41d6ab5242d247bd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://img.xkw.com/dksih/QBM/2015/12/28/1572399135080448/1572399140995072/STEM/3d1dd41f23a44cd7b5ff686d05e3a639.png?resizew=176)
(1)证明:CE
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37793a3a810e823e10c340986f55ddd.png)
您最近一年使用:0次
10 . 如图四边形
为菱形,
为
与
交点,
平面
,
(1)证明:平面
平面
;
(2)若
,
,
,令
与平面
所成角为
,且
,求该四棱锥
的体积.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/17/4f341222-7cd8-44c5-88db-5894ab3e6bf5.jpg?resizew=212)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a46fbde58e12b1edc038ae9e921722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926584088b939200d88e64318f2d4e6c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e918b70b02a73685e3c536c7f380e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aeeee5f39ee6f9c3ea01ada75d63b93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9e06498dbb23af8854941b9ed38a582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f67f1e4d68dd7b2403667f7a40c69a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/17/4f341222-7cd8-44c5-88db-5894ab3e6bf5.jpg?resizew=212)
您最近一年使用:0次
2016-12-03更新
|
891次组卷
|
2卷引用:宁夏石嘴山市第三中学2016届高三上学期第四次适应性考试数学(文)试题