1 . 如图,在直三棱柱
中,
,
,
,
,
分别为
,
的中点.
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b935580f6c20b82112df78d570a482b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ac2e11788860424508ea9e80cf89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc6db50a9709c3f4d84eee7bdf1250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade68d3f913ba0357f38a808392f5820.png)
您最近一年使用:0次
2024-01-26更新
|
329次组卷
|
3卷引用:陕西省汉中市汉台区2024届高三上学期第四次校际联考数学(文)试题
陕西省汉中市汉台区2024届高三上学期第四次校际联考数学(文)试题(已下线)专题01 高一下期末真题精选(2)-期末考点大串讲(人教A版2019必修第二册)山东省德州市夏津育中万隆中英文高级中学2023-2024学年高一下学期5月月考数学试题
解题方法
2 . 如图,在四棱锥
中,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/adcb658e-3739-475d-ab40-db553701daba.png?resizew=144)
(1)求证:
;
(2)若四棱锥
的体积为12,求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ed4f6bc8c7f08e80b194b867b0092d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f72c935697ef9ceb633a15b90b19ebc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eee296a7d9fba487f1485c61580196f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/adcb658e-3739-475d-ab40-db553701daba.png?resizew=144)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b44f4120c94cb7176dc31fcac387b32e.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2024-01-25更新
|
391次组卷
|
2卷引用:陕西省汉中市汉台区2024届高三下学期教学质量检测考试数学(理)试题
名校
3 . 在三棱锥
中,
.
.
(2)若
,平面
平面
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3bf38f0bcf5241c85606fadd41c1a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca76d0d2614f113bcd4c9e134b95123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
您最近一年使用:0次
2024-01-20更新
|
615次组卷
|
4卷引用:陕西省汉中市校际联考2024届高三上学期期末数学(理)试题
解题方法
4 . 如图,在三棱锥中,
是等边三角形,
是等腰直角三角形,平面
平面
,
,
,点O,E分别为
的中点.
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f896140f5402becf336ab2bc1910b05.png)
您最近一年使用:0次
解题方法
5 . 在直三棱柱
中,侧面
为正方形,
,
,
分别为
和
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/28/4668091b-800c-4873-81fd-055e52650ddd.png?resizew=124)
(1)证明:
;
(2)求
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37750daa8ba3b3fe3e9e2092f81c848.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0023280949eda97787964f0a9d41ed2e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/28/4668091b-800c-4873-81fd-055e52650ddd.png?resizew=124)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a96b25d2361dafe30efd8e69017f5db.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
您最近一年使用:0次
6 . 在直三棱柱
中,侧面
为正方形,
,E,F分别为AC和
的中点,
.
(1)证明:
.
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37750daa8ba3b3fe3e9e2092f81c848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0023280949eda97787964f0a9d41ed2e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/27/f165bb84-9480-45df-b65d-fc9d1ef5e53f.png?resizew=142)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a96b25d2361dafe30efd8e69017f5db.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd25fba2c711e1efbbb2d4a0d4b72f3d.png)
您最近一年使用:0次
解题方法
7 . 如图,在三棱柱
中,
平面
,且
,点
是棱
的中点.
(1)求证:
平面
;
(2)求三棱锥
的体积.
![](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/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cd9a2cf5917a7487640ee921762071d.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/2023/8/10/5ae7b0c0-0c74-4694-b889-ecfa3bdb385e.png?resizew=145)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5830646a912c3a916beac4f88c116b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a98287a302228ece1fa53c5c66c590f.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efebbbd5803c8775e30bbb27ad68719e.png)
您最近一年使用:0次
名校
解题方法
8 . 如图,在四棱柱
中,
底面
,底面
满足
,且
,
.
(1)求证:
平面
;
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/991451c5002137302527700e195220e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9c270d5384dfb3a76711a595472a32.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/9/fa3d9ba1-7461-4791-bab4-eace4af09fd3.png?resizew=182)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46097478fccd7467d5b91f42c0d195a6.png)
您最近一年使用:0次
2023-08-07更新
|
628次组卷
|
4卷引用:陕西省汉中市2021届高三上学期第一次校际联考文科数学试题
陕西省汉中市2021届高三上学期第一次校际联考文科数学试题陕西省榆林市神木中学2021届高三三模文科数学试题陕西省榆林市神木中学2020-2021学年高二上学期第二次测试数学试题(已下线)第04讲 直线、平面垂直的判定与性质(五大题型)(讲义)
解题方法
9 . 如图,长方体
的底面
是正方形,点
在棱
上,
.
(1)证明:
平面
;
(2)若
,
,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c810d9d154dbbc0cef6ab8ffcd488045.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/22/e5747308-c615-4cff-8f60-47b2ce08bbf9.png?resizew=122)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c4f474f2c144be8703517ef72b98a7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d0fdc5a00ca0e857b89a7e1420df29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e238bddad2ce99ad06214bf9d4eecc30.png)
您最近一年使用:0次
2023-07-21更新
|
683次组卷
|
3卷引用:陕西省汉中市2024届高三上学期第一次校际联考文科数学试题
10 . 如图,在四棱锥
中,
平面
,底面
为直角梯形,
,
,
为
的中点.
(1)证明:
.
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7af36689a2d2a5f999b3b5859a3c9faf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31613f00068be209424c69214a1deb24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/14/7dafc9ee-6a1a-48a3-bd73-5fbaa05cded5.png?resizew=164)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d23f34a0d1095678f4532f2a7f4c05.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f9bc6bf8ca426813d10b6db2e32d26.png)
您最近一年使用:0次
2023-07-11更新
|
866次组卷
|
5卷引用:陕西省汉中市2022-2023学年高二下学期期末理科数学试题
陕西省汉中市2022-2023学年高二下学期期末理科数学试题云南省楚雄州2022-2023学年高二下学期期末考试数学试题内蒙古名校联盟2022-2023学年高二下学期期末考试理科数学试题(已下线)1.4 空间向量应用(精练)-2023-2024学年高二数学《一隅三反》系列(人教A版2019选择性必修第一册)(已下线)第一章 空间向量与立体几何(知识归纳+6类题型突破)-2023-2024学年高二数学单元速记·巧练(人教A版2019选择性必修第一册)