解题方法
1 . 如图,在三棱柱
中,底面ABC为等腰直角三角形,
,
,
,点M,N分别为
,
的中点.
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c10d461a7c0b86a2f09c2ea17f38260e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26208e5d58cc5abf1af936480d1932b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92105835f8075cb75dff244e908370b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c2f3deb4f2d83321d19819191eb389e.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/861d61d2b7b16e12fd97f870fb3fa522.png)
您最近一年使用:0次
2 . 如图,在四棱柱
中,二面角
均为直二面角.
平面
;
(2)若
,二面角
的正弦值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dff61f54b645b5a0fb9c7a53ac74a71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f26accac75d654e05a0cbdd7e9ff902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e866c8eefea85a452590782a7e1f930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5509269c540ac83ba34d2e8a31242903.png)
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2024-03-27更新
|
632次组卷
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3卷引用:河南省濮阳市2024届高三下学期第一次模拟考试数学试题
河南省濮阳市2024届高三下学期第一次模拟考试数学试题河南省焦作市2024届高三第二次模拟考试数学试题(已下线)专题06 空间直线﹑平面的垂直(一-《知识解读·题型专练》(人教A版2019必修第二册)
3 . 如图,在四棱锥中,底面
是正方形,
,且
,平面
平面
分别是棱
的中点,点
在棱
上.
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62cce4195e4e9045821a4a9e79a151cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01a444941f7242b92a1e68b1d8a31ddb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edbb52befa94a9f54e6f3e3125918016.png)
您最近一年使用:0次
2024-03-25更新
|
458次组卷
|
2卷引用:安徽省部分普通高中2023-2024学年高二下学期春季阶段性检测数学试题
名校
4 . 如图,已知三棱台
的高为1,
,
为
的中点,
,
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/b738300d-7d33-495d-9aef-6d5b807de968.png?resizew=159)
(1)求证:
平面
;
(2)求
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49a315757ac725cac0498ed321582cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aed156de235d5a45ae8081100004dd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/521e771f98c17242d43c78d511ba7134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21dee56b9f36ba8f76fe67b76383636b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/b738300d-7d33-495d-9aef-6d5b807de968.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e5981445b6f2a6c58974158d96a4de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
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2024-03-21更新
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4卷引用:江苏省南通市海安高级中学2024届高三下学期开学考试数学试题
江苏省南通市海安高级中学2024届高三下学期开学考试数学试题江苏省南通市海安市2023-2024学年高三上学期期初学业质量监测数学试题(已下线)重难点6-1 空间角与空间距离的求解(8题型+满分技巧+限时检测)江苏省扬州市高邮市临泽中学2024届高三下学期一模模拟数学试题
5 . 如图,在四棱锥
中,底面ABCD为直角梯形,
,
,
,点
为
的中点,
,
.
平面ABCD;
(2)若
,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/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f1161e0345b3646c71365430dccbb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f03adc5011c86ae38d39246a7e9d0e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d30637da200a07672ae231b4c5c09cd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/010a32eb621302fe4a397f7a667d5071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae2624b3be2a7e4123747b6f312bcc63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/753a64115d3ba7e6bb835b63e39fbdd3.png)
您最近一年使用:0次
2024-03-21更新
|
476次组卷
|
2卷引用:四川省成都市蓉城名校联盟2023-2024学年高二下学期开学考试数学试题
名校
解题方法
6 . 如图,在四棱锥
中,四边形
是菱形,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/2e50b09c-1358-4cca-a038-9834ab4acfa6.png?resizew=156)
(1)证明:
平面
.
(2)若
,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/fac266a8d110bd486e0059b03df8e382.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/2e50b09c-1358-4cca-a038-9834ab4acfa6.png?resizew=156)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1e8e1e47b68cd3014097650121d601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1112ffa328ed486ffc5e4a605eb510e.png)
您最近一年使用:0次
2024-03-21更新
|
649次组卷
|
3卷引用:内蒙古自治区赤峰市第四中学2023-2024学年高三下学期开学考试文科数学试题
名校
7 . 如图,在长方体中,点
、
分别在
、
上,且
,
.
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26d8a9d64ad3c8cba28840b41ed7837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f3e58edd1f900ca82bb2a3058293f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4cd2b33bd983a9ed6575b9de04a46a.png)
您最近一年使用:0次
8 . 如图,在三棱台
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/3710d003-fb29-471a-af5c-43b24f3de348.png?resizew=181)
(1)证明:
;
(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/49c20287386583c8ee11b44b1af0de5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2106309ce73b6cfc480fe0389c1c9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354c20e085fe1a99a8be03bd1d16b2f3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/3710d003-fb29-471a-af5c-43b24f3de348.png?resizew=181)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e8e94ba1dfb62069fb125be98d2498a.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e53b212640dadf751ef7f65a78a209.png)
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2024-03-17更新
|
1861次组卷
|
6卷引用:内蒙古赤峰第四中桥北学分校2024届高三下学期开学摸底联考数学(理)试题
名校
解题方法
9 . 已知空间四棱锥
中,
,
.
(1)求证:平面
平面
;
(2)求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fba380b4a02fc29fc4e3d43ebed85c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/482e223b93d1539b160e03b4f9b82703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/217031788a3cc1f1402ee8bbd8e5835f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/0d9375db-2aa7-4f2d-91cf-6a835e7a7a55.png?resizew=160)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae1f07df5692e4c4e2db643aefdd0d98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9503e4c6915f292371e8f60d49e4363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c15eecc6efaac26dd74b8f539d93bcf.png)
您最近一年使用:0次
10 . 如图,在四棱柱
中,四边形
为菱形,四边形
为矩形,
,
,
,二面角
的大小为
,
分别为BC,
的中点.
(1)求证:
;
(2)求直线
与平面BCN所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffc2817fa590affb5a760a25dc65308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/131c735c1736250c608af9f0d2d185fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9977da109ae8644f94b286ccded8cc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/c1a3264e-317e-4b6e-89d0-be06cab5285c.png?resizew=193)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598dc6b5a7737df67f6df097da7866b0.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
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