名校
解题方法
1 . 如图,在四棱锥
中,
底面ABCD,
,
,
,
,E是PC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/504fbc2a-9e8a-44ab-9813-344238e8e0e1.png?resizew=150)
(1)求PB和平面PAD所成的角的大小;
(2)证明:
平面PCD;
(3)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf10d92f20501e19d25f6f4159aab89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace900749d0861aa51fcc6d72c51f82c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/504fbc2a-9e8a-44ab-9813-344238e8e0e1.png?resizew=150)
(1)求PB和平面PAD所成的角的大小;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e867e5c7ef4da37d8985ce82022060e.png)
您最近一年使用:0次
2020-02-29更新
|
409次组卷
|
5卷引用:甘肃省兰州大学附中2017-2018学年高一上学期期末数学试题
2011·山东潍坊·一模
名校
2 . 如图,在直三棱柱
中,平面
侧面
,且
,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/617c963d-570f-42ed-8be2-70e96bfd857b.png?resizew=146)
(Ⅰ)求证:
;
(Ⅱ)若直线
与平面
所成角的大小为
,求锐二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae68e55b536a22145547bb15916ec42e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21dee56b9f36ba8f76fe67b76383636b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4339a40ae9d1947ec3a4b3e2fa3a16cd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/617c963d-570f-42ed-8be2-70e96bfd857b.png?resizew=146)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
(Ⅱ)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0218542daefa15910d5111b27e71f5b3.png)
您最近一年使用:0次
2019-06-05更新
|
544次组卷
|
6卷引用:【全国百强校】甘肃省兰州市第一中学2019届高三6月最后高考冲刺模拟数学(理)试题
【全国百强校】甘肃省兰州市第一中学2019届高三6月最后高考冲刺模拟数学(理)试题(已下线)2011届山东省潍坊市三县高三最后一次模拟考试文数(已下线)2012届山东省莱州一中高三第二次质量检测文科数学试卷【全国百强校】安徽省六安市第一中学2019届高三下学期高考模拟考试(三)数学(理)试题四川省攀枝花市2018-2019学年高二下学期期末数学(理)试题四川省内江市威远中学校2020-2021学年高二下学期第三次月考数学(理)试题
名校
解题方法
3 . 在正方体
中,点E是线段
的中点,则直线
与
所成角的余弦值是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e75d14708e6aa1404477db9d7e3166f0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/5/afda685a-7651-4afb-8e6a-54ac3f571570.png?resizew=174)
您最近一年使用:0次
2020-09-20更新
|
332次组卷
|
5卷引用:甘肃省兰州市教育局第四片区2021-2022学年高二下学期期中考试数学(理)试题
甘肃省兰州市教育局第四片区2021-2022学年高二下学期期中考试数学(理)试题安徽省阜阳市太和中学2019-2020学年高二下学期开学考试数学(理)试题(已下线)专题8.7 立体几何中的向量方法(精练)-2021年新高考数学一轮复习学与练江西省高安中学2020-2021学年高二上学期期末考试数学(理)试题江西省新余市2020-2021学年高二下学期期末数学(理)试题
12-13高二·云南大理·阶段练习
名校
4 . 如图,边长为2的等边△PCD所在的平面垂直于矩形ABCD所在的平面,BC=
,M为BC的中点.
![](https://img.xkw.com/dksih/QBM/2018/12/14/2096641906999296/2098788964384768/STEM/f23e52ea0ed04bf981193fa2e9a38fae.png?resizew=196)
(I)证明:AM⊥PM ;
![](https://img.xkw.com/dksih/QBM/2018/12/14/2096641906999296/2098788964384768/STEM/d7ad34b7aaa04554bd3b0a620b3af464.png?resizew=33)
![](https://img.xkw.com/dksih/QBM/2018/12/14/2096641906999296/2098788964384768/STEM/f23e52ea0ed04bf981193fa2e9a38fae.png?resizew=196)
(I)证明:AM⊥PM ;
(II)求二面角P-AM-D的大小.
您最近一年使用:0次
2018-12-17更新
|
532次组卷
|
13卷引用:【全国百强校】甘肃省兰州第一中学2019届高三12月月考数学(理)试题
【全国百强校】甘肃省兰州第一中学2019届高三12月月考数学(理)试题甘肃省兰州一中2019届高三上学期12月月考数学(理)试题(已下线)2012-2013学年云南大理州宾川县第四高级中学高二月考理科数学卷2015-2016学年甘肃省会宁县一中高一上学期期末数学试卷2015-2016学年福建省连江尚德中学高一上学期12月考数学试卷山东省栖霞市第一中学2017-2018学年高一上学期期末测试数学试题(已下线)活页作业11 直线间的夹角 平面间的夹角-2018年数学同步优化指导(北师大版选修2-1)人教版 全能练习 必修2 第一章 滚动习题(二)山东省济宁市曲阜市第一中学2020-2021学年高二阶段性检测(9月月考)数学试题河北省沧州市第三中学2019-2020学年高一下学期期末数学试题广东省东莞市新世纪英才学校2021-2022学年高二上学期第一次教学质量检测数学试题甘肃省民勤县第一中学2021-2022学年高二下学期期中考试数学(理) 试卷江西省九江第一中学2022-2023学年高二上学期期中考试数学试题
名校
5 . 如图,已知矩形
所在平面垂直于直角梯形
所在平面于直线
,且
,
且
∥
.
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572498107219968/1572498112643072/STEM/4b93084b204b4899a29cd8ac278ceab5.png?resizew=177)
(Ⅰ)设点
为棱
中点,求证:
平面
;
(Ⅱ)线段
上是否存在一点
,使得直线
与平面
所成角的正弦值等于
?若存在,试确定点
的位置;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1195c8aeabf1925d6980b8de505e4050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ee06b35a55efafdc6c9b4839195dd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13eaa22726a8645009cede35eaba2f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572498107219968/1572498112643072/STEM/4b93084b204b4899a29cd8ac278ceab5.png?resizew=177)
(Ⅰ)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ee5f3950aa6f59c76cf91c3ed8f290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(Ⅱ)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
2016-12-04更新
|
1681次组卷
|
8卷引用:甘肃省兰州大学附属中学2020-2021学年高三上学期12月月考数学理科试题
名校
解题方法
6 . 直三棱柱
中,若
,
,则异面直线
与
所成的角为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/fe90703a-c806-493d-aa58-cf10db411d0e.png?resizew=131)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd8f940b796af67206b3f9dd410a407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7d857811cbd619f868d951aa7a0ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/fe90703a-c806-493d-aa58-cf10db411d0e.png?resizew=131)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-02-18更新
|
251次组卷
|
3卷引用:甘肃省兰州市第六十一中学2022-2023学年高三上学期期中数学(文科)试题
7 . 如图所示,三棱锥
中,平面
平面
,平面
平面
,
分别是
和
边上的点,且
,
,
,
,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/9d2d149a-155a-4fd1-a649-4aa1c422ae53.png?resizew=227)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448cbac9a1ef3de7538a6b30cdc39582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78307cd417504554a4e2276fe24d1162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7db7c08836b6577b49677115aefe31f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1804c3641953c30ccf750504eff6577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82773737609e65dea3c5c67099f1b10d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64d5fcee996a47e9cc3cfd4ba108f21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/9d2d149a-155a-4fd1-a649-4aa1c422ae53.png?resizew=227)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/063510e3c1fb6a7ccc3b8e3e3c7d660e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bcf5c7c83a913857da308e501c6c4b9.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e6629d0e1a4ce3fe4f0345f6961473.png)
您最近一年使用:0次
8 . 在四棱锥
中, 底面
为平行四边形,
点在底面
内的射影
在 线段
上, 且
为
的中点,
在线段
上, 且
.
![](https://img.xkw.com/dksih/QBM/2017/4/13/1664769990254592/1664858970628096/STEM/dd7eef7c-cde4-450e-b0b3-50aa4ccd6b3f.png?resizew=185)
(1) 当
时, 证明: 平面
平面 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0de5641db7accfdb1aed4afc9c067ac1.png)
当平面
与平面
所成二面角的正弦值为
时, 求四棱锥
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/6ef064b7768e77e3e8d32f3f96e453f2.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a584d9a1d45b7f8e0983e8ccab84bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/37b6e823d73097c0bf9a244c94ab4f08.png)
![](https://img.xkw.com/dksih/QBM/2017/4/13/1664769990254592/1664858970628096/STEM/dd7eef7c-cde4-450e-b0b3-50aa4ccd6b3f.png?resizew=185)
(1) 当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441809d6ce2df21a85b390cdce9b1112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6742cc605e3d1fa702b3479b28606131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0de5641db7accfdb1aed4afc9c067ac1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd23eefdd44e679b004f2c978e87208e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c745df4f226027778d5fe45b6501b822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec53c9cc69c2e3943ec8df5d5b5d44c7.png)
您最近一年使用:0次
2017-04-13更新
|
876次组卷
|
4卷引用:甘肃省兰州第一中学2017届高三冲刺模拟考试数学(理)试题
甘肃省兰州第一中学2017届高三冲刺模拟考试数学(理)试题2016-2017学年河北省唐山市高三年级第二次模拟考试理科数学试卷四川省双流中学2018届高三11月月考数学(理)试题(已下线)专题19 几何体的表面积与体积问题——备战2022年高考数学二轮复习常考点专题突破
名校
9 . 如图,四棱锥P-ABCD中,AP⊥平面PCD,
,
,
,E为AD的中点,AC与BE相交于点O.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/1d2c665d-7284-4e30-920e-8ac8b13b24ea.png?resizew=222)
(1)求证:PO⊥平面ABCD;
(2)求直线AB与平面PBD所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b377f22aafd3742ad860f77abaacef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f2d58e450193da0539a687dabf0bfa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/1d2c665d-7284-4e30-920e-8ac8b13b24ea.png?resizew=222)
(1)求证:PO⊥平面ABCD;
(2)求直线AB与平面PBD所成角的正弦值.
您最近一年使用:0次
2020高三·全国·专题练习
解题方法
10 . 已知圆锥的顶点为A,高和底面的半径相等,BE是底面圆的一条直径,点D为底面圆周上的一点,且∠ABD=60°,则异面直线AB与DE所成角的正弦值为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-04-30更新
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3卷引用:2020届甘肃省兰州市高三诊断考试数学(理)试题