如图,直三棱柱
中,
的面积为
,四棱锥
的体积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/b5c56dde-ebf2-4db5-97ab-fb6fc4fd7d4b.png?resizew=143)
(1)求
到平面
的距离;
(2)若
,且平面
平面
,求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e827641feb4179bca7033ed8760bf728.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34f6658a6fa46b1597f382a3455ad04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a391005600bdd69c96750589f9adb048.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/b5c56dde-ebf2-4db5-97ab-fb6fc4fd7d4b.png?resizew=143)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeed487430a5b8a330f2d0c52166521a.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/0218542daefa15910d5111b27e71f5b3.png)
2023·全国·模拟预测 查看更多[1]
(已下线)2024届高三数学信息检测原创卷(五)
更新时间:2024-01-05 10:36:57
|
相似题推荐
【推荐1】如图,在三棱柱
中,
,
,
,
.
平面ABC;
(2)求四棱锥
的体积.
![](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/ab81304e0e2784256d1c59c60eee8bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6902031c37ae0c8b8cc3538abc76ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/521e771f98c17242d43c78d511ba7134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21dee56b9f36ba8f76fe67b76383636b.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da5a89f5938fe9ac2f86aab28e334dc.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】如图,已知正四棱锥
的所有棱长都为
,E,F两点满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/1f186633-7c3c-4dbc-a46a-bd236b8b94b7.png?resizew=166)
(1)求直线EF与平面PAB所成角的正弦值;
(2)求平面AEF截四棱锥
所得较小几何体的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af2fdf1944afebb51cb6a5e6c74aadd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbc5f63baf1a6baeb685a0d87b660eae.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/1f186633-7c3c-4dbc-a46a-bd236b8b94b7.png?resizew=166)
(1)求直线EF与平面PAB所成角的正弦值;
(2)求平面AEF截四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,在三棱锥
中,
,
,且
,
为线段
的中点,
是线段
上一动点.
(1)求证:
;
(2)当
时,求证
;
(3)当
面积最小时,求点
到面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2aaed1e9ead175f30f7130569d0411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2aaed1e9ead175f30f7130569d0411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52eee2d0f096d924ed16a035ddf8f5e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6707b8092171fc1902e2d91bc8f1d701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5034a973110e2a6eb2e7d5699c24f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d260c4df7b0dc180af6980d21f3371.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44c324894742cb48dbe75516843601a0.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00d103261f612af48cd98cd5119a83f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a20e5d585fbf903ee5affa6d083ab95f.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7e437375b731a097c117c3816f13772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93f76b6ac1b8875af7156f3239dae6f7.png)
![](https://img.xkw.com/dksih/QBM/2018/7/16/1989558709649408/1989961491013632/STEM/8f890f20a013404bb07d5e262ffb719a.png?resizew=166)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】如图,在平行四边形ABCD中,AD=BD=1,
,将平面ABD沿BD翻折得到四面体A'﹣BCD,点E为棱A'B的中点,过点D作DF⊥A'C于点F,当四面体A'﹣BCD的体积最大时.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/52a1064b-ff39-4608-9bb2-5e89cd3c21e9.png?resizew=437)
(1)证明:EF⊥A'C;
(2)求点B到平面DEF的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/52a1064b-ff39-4608-9bb2-5e89cd3c21e9.png?resizew=437)
(1)证明:EF⊥A'C;
(2)求点B到平面DEF的距离.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
解题方法
【推荐1】如图,圆柱
底面直径
长为4,
是圆
上一点,且点
为圆弧
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/58359eeb-62ff-4aa5-b7de-ac7df95ef3bb.png?resizew=142)
(1)求证:平面
平面
;
(2)若该圆柱的体积为
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae0a4f38420bb9215dbc9c875b755838.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/58359eeb-62ff-4aa5-b7de-ac7df95ef3bb.png?resizew=142)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d40fad0bf738887305d76fb6c23a22c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
(2)若该圆柱的体积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77fedb24b1f1450e4fc7449188f5bd1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8358b9bfd17eb4cb819a4d652b6b561.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】在三棱锥
中,
平面
,平面
平面
.
(1)证明:
平面
;
(2)若
为
的中点,且
,
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/16/8d25efb9-48df-4593-8a36-c7d9fdc5eaa1.png?resizew=161)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d827c3694aaa02490e0a9c01b45ddc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1854ba6cc92481d7a616bd2788a47e.png)
您最近一年使用:0次