名校
解题方法
1 . 四棱锥
中,底面
是边长为
的正方形,侧面
为正三角形,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2020/5/5/2456253626228736/2456745535717376/STEM/d3a3db6ed6f74fefa3cdc5e440f319f0.png?resizew=189)
证明:平面
平面
;
求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d923a338dd2d2e29336b42574d38448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fe724734454d994d1e74b7b8a66e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2020/5/5/2456253626228736/2456745535717376/STEM/d3a3db6ed6f74fefa3cdc5e440f319f0.png?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/877582b5387278008d14fe5932622fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f7e6fc8324f9f7f826677be25a6479.png)
您最近一年使用:0次
名校
解题方法
2 . 如图所示,在四棱锥
中,底面
为正方形,
,
,
,
,
为
的中点,
为棱
上的一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/6d3bda83-a948-4340-a33c-3d47b4483cc7.png?resizew=167)
(1)证明:面
面
;
(2)当
为
中点时,求二面角
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/4cbb05b8b630052ff544249ebd72d95d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c19f0fcacac715a1200770516d1e4a67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccfb8347b22077e850fe698eabbb2f18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/6d3bda83-a948-4340-a33c-3d47b4483cc7.png?resizew=167)
(1)证明:面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e92c3dbf9981a81f4093c9760943e21c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1de4bf00668ed43b09cfe7fbef2a85c3.png)
您最近一年使用:0次
2020-04-24更新
|
797次组卷
|
7卷引用:理科数学-2020年高考押题预测卷03(新课标Ⅱ卷)《2020年高考押题预测卷》
(已下线)理科数学-2020年高考押题预测卷03(新课标Ⅱ卷)《2020年高考押题预测卷》(已下线)专题九 立体几何与空间向量-2020山东模拟题分类汇编2020届山东省淄博市高三一模数学试题宁夏石嘴山市第三中学2022届高三第三次模拟考试数学(理)试题新疆新和县实验中学2023届高三上学期第一次月考数学(理)试题四川省泸县第一中学2020-2021学年高二上学期第二次月考数学(理)试题广东省揭阳市揭阳第一中学榕江新城学校2023-2024学年高二上学期期中数学试题
名校
3 . 已知四棱锥
的底面是直角梯形,
,
,且
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2020/4/21/2446480645087232/2446827827093504/STEM/440f084444324b37b186ba9794b9e386.png?resizew=227)
求证:
;
求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b78225f5b63f4a175ba928d73c802a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5992b02545bbe195873650c139d8a639.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2020/4/21/2446480645087232/2446827827093504/STEM/440f084444324b37b186ba9794b9e386.png?resizew=227)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ac6979adfa3b30c6067a9fdfd49f08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
4 . 如图,三棱柱
所有的棱长为
,
,
是棱
的中点.
![](https://img.xkw.com/dksih/QBM/2020/3/24/2426670003183616/2427257317310464/STEM/8203fbe9e58a4d16aa88845c3ec3a894.png?resizew=266)
(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/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/340c16426c497f63c8d239e3b478700c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2020/3/24/2426670003183616/2427257317310464/STEM/8203fbe9e58a4d16aa88845c3ec3a894.png?resizew=266)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f36f074d1dc1054c679236ec70dcaf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
您最近一年使用:0次
名校
解题方法
5 . 如图,正三棱柱
中,各棱长均等于
,
为线段
上的动点,则平面
与平面
所成的锐二面角余弦值的最大值为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b91c857bbe3c4f0f08dd2a4124a96e.png)
![](https://img.xkw.com/dksih/QBM/2020/2/15/2399576145403904/2425602133204992/STEM/02a077eeb9174e75866b86b955353f8a.png?resizew=182)
您最近一年使用:0次
2020-03-23更新
|
714次组卷
|
5卷引用:FHsx1225yl162
(已下线)FHsx1225yl162福建省福州华侨中学2022届高三上学期期中考数学试题浙江省绍兴市诸暨市2019-2020学年高二上学期期末数学试题(已下线)1.4.3+运用立体几何中的向量方法解决距离与角度问题(重点练)-2020-2021学年高二数学十分钟同步课堂专练(人教A版选择性必修第一册)(已下线)3.4.3 运用立体几何中的向量方法解决距离与角度问题(重点练)-2020-2021学年高二数学(理)十分钟同步课堂专练(人教A版选修2-1)
名校
6 . 如图,四棱锥P﹣ABCD的底面是梯形.BC∥AD,AB=BC=CD=1,AD=2,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b8f9efada515904b015baa8e2fc1b8c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/bd80ff47-3d74-46af-9200-fe32847a61d5.png?resizew=177)
(Ⅰ)证明;AC⊥BP;
(Ⅱ)求直线AD与平面APC所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96ac79190e1b93c16b5d00a1b516281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b8f9efada515904b015baa8e2fc1b8c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/bd80ff47-3d74-46af-9200-fe32847a61d5.png?resizew=177)
(Ⅰ)证明;AC⊥BP;
(Ⅱ)求直线AD与平面APC所成角的正弦值.
您最近一年使用:0次
2020-03-22更新
|
930次组卷
|
7卷引用:考点23 运用空间向量解决立体几何问题-2021年高考数学三年真题与两年模拟考点分类解读(新高考地区专用)
(已下线)考点23 运用空间向量解决立体几何问题-2021年高考数学三年真题与两年模拟考点分类解读(新高考地区专用)(已下线)专题19 立体几何综合-2020年高考数学母题题源全揭秘(浙江专版)2020届浙江省杭州二中高三上学期返校考试数学试题2020届浙江省温州中学高三下学期3月高考模拟测试数学试题福建省三明市2019-2020学年普通高中高三毕业班质量检查A卷(5月联考)理科数学试题福建省三明市2019-2020学年高三(5月份)高考(理科)数学模拟试题安徽省滁州市定远县第二中学2022届高三下学期高考模拟检测理科数学试题
7 . 如图,三棱柱
中,
平面
,
,
,
,
,
是
的中点,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/de901802-e4a9-42ad-bbe6-d22a01a88ddf.png?resizew=203)
(Ⅰ)证明:
平面
;
(Ⅱ)
是线段
上一点,且直线
与平面
所成角的正弦值为
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a9ad711b25c36dae0c2a2cedff9954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25e8fc3dda4f8b45491514b6e22a962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d97f616f0f32beed421129cbbb4db8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/de901802-e4a9-42ad-bbe6-d22a01a88ddf.png?resizew=203)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78172568aac9805d2ea2d5f742bf80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7ae8d6b308aee3387116f0ec92339d.png)
(Ⅱ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5846494f0ee2c4ab2d1cc32b785adc3.png)
您最近一年使用:0次
8 . 如图,在直三棱柱ABC﹣A1B1C1中,∠BAC=90°,AB=AC=AA1.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/68830015-a59f-4b0a-a322-6dca3755fd59.png?resizew=174)
(1)求证:AB1⊥平面A1BC1;
(2)若D在B1C1上,满足B1D=2DC1,求AD与平面A1BC1所成的角的正弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/68830015-a59f-4b0a-a322-6dca3755fd59.png?resizew=174)
(1)求证:AB1⊥平面A1BC1;
(2)若D在B1C1上,满足B1D=2DC1,求AD与平面A1BC1所成的角的正弦值.
您最近一年使用:0次
9 . 如图,在四棱锥
中,平面
平面
,
是边长为
的等边三角形,
,
,
,点
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/6ca63356-1a83-49ff-96bd-fc8e57687d2a.png?resizew=190)
(1)求证:
平面
;
(2)求证:
;
(3)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ecf025b484f24d1aef7e73a7a800105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c674dc5024374f53920947c4cf4baf11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3602ec4c8f5ac2737fa78c05708c869f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b405a122ded2eb0395d5434892ae7b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f64f78e151b46db08660df64a0c6132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/6ca63356-1a83-49ff-96bd-fc8e57687d2a.png?resizew=190)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ee5f3950aa6f59c76cf91c3ed8f290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734735213b599a9915e1ed91a5d8ce4.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/051ca3c8e6421a0bd30620416468dd42.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a8d99c75180422fecf6d3f3d2910b34.png)
您最近一年使用:0次
名校
解题方法
10 . 如图,四棱锥E﹣ABCD的侧棱DE与四棱锥F﹣ABCD的侧棱BF都与底面ABCD垂直,
,
//
,
.
![](https://img.xkw.com/dksih/QBM/2020/3/2/2410737436590080/2412398469545984/STEM/426907cc-7716-45c0-82c6-d9b05f14013e.png)
(1)证明:
//平面BCE.
(2)设平面ABF与平面CDF所成的二面角为θ,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efdaef8d473c2deb6f4ca52e8fd9df0b.png)
![](https://img.xkw.com/dksih/QBM/2020/3/2/2410737436590080/2412398469545984/STEM/426907cc-7716-45c0-82c6-d9b05f14013e.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
(2)设平面ABF与平面CDF所成的二面角为θ,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5ff5a2e7663e6a21ccea3149a10113.png)
您最近一年使用:0次
2020-03-04更新
|
1221次组卷
|
7卷引用:基础套餐练04-【新题型】2020年新高考数学多选题与热点解答题组合练