名校
1 . 如图,在直三棱柱
中,
,
,
,点M、N分别为
和
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/7/c3f75a32-d2cb-427d-811d-4b020874c32b.png?resizew=159)
(1)求异面直线
与
所成角的余弦值;
(2)证明:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f2185273bf04c11118c7954f7ec822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7479255f54d51b97e6314db1dc06eb22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e663220a66eff19da6a71e46b397db2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e737bc35da650eda3825d29799b5f86f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/7/c3f75a32-d2cb-427d-811d-4b020874c32b.png?resizew=159)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e663220a66eff19da6a71e46b397db2e.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a06faea49d957a5bab3fe0582f76ff23.png)
您最近一年使用:0次
名校
2 . 四棱锥
中,底面
为菱形.若
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/7/912532a4-7033-4aaa-9759-c3a898ffe21a.png?resizew=161)
(1)求证:
平面
;
(2)若
,异面直线
与
所成角为
,求二面角
的正弦值.
![](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/a23f01af749100e1888bba06268843db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d0710321d97361e5782124bbf7f0c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbd1316b9d1f0c1e71fd078deec61f6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/7/912532a4-7033-4aaa-9759-c3a898ffe21a.png?resizew=161)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891ed9ced0b015d68e31b28a679e5da7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1636b4530c0b42d0e0b649e90e3b9e85.png)
您最近一年使用:0次
名校
3 . 如图,在三棱锥
中,侧面
底面
,
,
是边长为2的正三角形,
,
分别是
的中点,记平面
与平面
的交线为
.
平面
;
(2)设点
在直线
上,直线
与平面
所成的角为
,异面直线
与
所成的角为
,求当
为何值时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbfcae2cecc98e2d6c16dde6d3ec1c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829a1a887ceba13dd8551b1e3604bf6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9df740160690029ac1e730c85f20347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4820decdfaf6808eda1b625cc8aa0110.png)
您最近一年使用:0次
2024-06-10更新
|
507次组卷
|
7卷引用:重庆市第八中学2022届高三下学期调研检测(七)数学试题
重庆市第八中学2022届高三下学期调研检测(七)数学试题湖南师范大学附属中学2022届高三下学期月考(七)数学试题山西大学附属中学校2023届高三下学期3月模块诊断数学试题云南省红河州建水实验中学2022-2023学年高一下学期4月考试数学试题(已下线)专题03 空间向量求角度与距离10种题型归类-【巅峰课堂】2023-2024学年高二数学上学期期中期末复习讲练测(人教A版2019选择性必修第一册)湖北省宜荆荆2024届高三下学期五月高考适应性考试数学试题 江苏省南通一中2023-2024学年高二年级数学下学期第二次月考(含答案)
名校
解题方法
4 . 在正四棱柱
中,
为
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/11/5788da87-6045-4b4d-8c3c-34b033e1925b.png?resizew=161)
(1)点
满足
,求证:
四点共面;
(2)若
,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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56387ff53874620addcb0b91a605a309.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/11/5788da87-6045-4b4d-8c3c-34b033e1925b.png?resizew=161)
(1)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7115ad722348fd88428fe9febf7f2442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d1e039a68dc2d5131d73f1a62adf6c2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06899de5410eada165f0ab899ee07c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fed2f706801662432b68797e72647c6e.png)
您最近一年使用:0次
5 . 如图,正三棱锥
中,
为棱
的三等分点.
(1)求异面直线
夹角的余弦值;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e66c9012b16d79e0e2566a507c8b9314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/26/a21a1ab1-c0c8-424e-8cf6-3ae97005ba5d.png?resizew=161)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/268544817735d20ffbceef3b26db5dde.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc3bf74119692ac98eb24fcfa2a3f9f.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,AB是圆柱的母线,BD是圆柱底面圆的直径,C是底面圆周上一点,E是AC上的点,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/c1ef8b8a-fcc8-4d80-8961-5ef567e1f5d7.png?resizew=121)
(1)求证:
;
(2)求直线BD与AC所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd2ba31936561b06ec57a0ea893ada20.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/c1ef8b8a-fcc8-4d80-8961-5ef567e1f5d7.png?resizew=121)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a0d2a2415ec1e1374ac46bc232f450.png)
(2)求直线BD与AC所成角的大小.
您最近一年使用:0次
名校
解题方法
7 . 如图,在以A,B,C,D,E,F为顶点的六面体中(其中
平面EDC),四边形ABCD是正方形,
平面ABCD,
,且平面
平面
.
为棱
的中点,证明:
四点共面;
(2)若
,求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001e90e232a254b9a57dc3339ea265dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a38e6c6dfde2b19b6b47f35a439a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5493b819f911918c69ee006b0a4827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02b6df2041ef74bd8a80c9f1ab7cf47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/466fabcaac59132fea648ff35342ec9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e74186ac772d27f6427b284e25bfa7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ad998188c33f18f04ba8891f700b466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/112a1a3346aa0acbe5f59ffe0a319912.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62871bb0dff211fc3bd80f9066c25b29.png)
您最近一年使用:0次
2023-01-10更新
|
3614次组卷
|
13卷引用:重庆市第一中学校2022-2023学年高一下学期4月月考数学试题
重庆市第一中学校2022-2023学年高一下学期4月月考数学试题湖南省长沙市2023届高三上学期新高考适应性考试数学试题浙江省名校协作体2022-2023学年高二下学期开学联考适应性考试数学试题广东省珠海市第一中学2023届高三下学期2月阶段性考试数学试题湖南省岳阳市华容县2023届高三上学期普通高中新高考适应性考试数学试题专题16空间向量与立体几何(解答题)浙江省宁波市镇海中学2023届高三下学期4月统一测试数学试题湖南省岳阳市平江县第一中学2023届高三下学期适应性考试(二)数学试题湖南省长沙市长郡湘府中学2023-2024学年高三上学期入学考试(暑假作业检测)数学试题福建省福州第八中学2024届高三上学期期中考试数学试题(已下线)2024届数学新高考Ⅰ卷精准模拟(八)江苏省无锡市第六高级中学2024届高三上学期12月教学质量调研数学试题(已下线)【一题多变】四点共面 向量转化
8 . 如图,在四棱锥
中,
,E是PB的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/23ad7b26-a3bd-4e4e-8811-abf66574bf4e.png?resizew=191)
(1)求CE的长;
(2)设二面角
平面角的补角大小为
,若
,求平面PAD和平面PBC夹角余弦值的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/804b8f9105ac2b383a3686de0cac1ab2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/23ad7b26-a3bd-4e4e-8811-abf66574bf4e.png?resizew=191)
(1)求CE的长;
(2)设二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c911b404bbb8f8d5f1470585fa31ad97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67c89ceb040588c165ad7a8030906c7.png)
您最近一年使用:0次
2023-01-09更新
|
1000次组卷
|
4卷引用:重庆市万州第二高级中学2022-2023学年高二上学期期末数学试题
重庆市万州第二高级中学2022-2023学年高二上学期期末数学试题安徽省皖东县中联盟2022-2023学年高三上学期期末联考数学试题(已下线)第11讲 第一章 空间向量与立体几何 章末题型大总结(2)(已下线)重难点突破06 立体几何解答题最全归纳总结(九大题型)-3
9 . 如图,在
中,
,斜边
.
可以通过
以直线AO为轴旋转得到,且二面角
是直二面角.D是AB的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/4c722547-aa52-43f9-a6de-7e5fa9ab3340.png?resizew=140)
(1)求证:平面
平面AOB;
(2)求异面直线AO与CD所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c633830c6e2ac6d8d6e18890ef5ee33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/991c8373be20b4325ba779e4dfdc8b15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/864aa0f490f42c358d1550c99bd81c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c633830c6e2ac6d8d6e18890ef5ee33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19c1bcb8431ae315ecd29c6478d3eff.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/4c722547-aa52-43f9-a6de-7e5fa9ab3340.png?resizew=140)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a55c40bb7437081d8e669974c8d1b7.png)
(2)求异面直线AO与CD所成角的余弦值.
您最近一年使用:0次
10 . 如图,在正方体
中,
,
,
分别是棱
,
,
的中点,又
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/19/5885aa87-0d8c-4524-b6f1-11d10e4ae823.png?resizew=221)
(1)求证:平面
平面
;
(2)求直线
与
所成角的余弦值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/19/5885aa87-0d8c-4524-b6f1-11d10e4ae823.png?resizew=221)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f79058a6f1268b5b1af757ccecff683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ebf7be76eb49f41bed85431705597b9.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13cf3a313649d7b92f28dd9fb8c27e41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
您最近一年使用:0次
2022-08-11更新
|
377次组卷
|
2卷引用:重庆市酉阳土家族苗族自治县第三中学校2021-2022学年高一下学期第三次月考数学试题