名校
1 . 如图,在长方体
中,
点
分别在
棱上,且
,
.
![](https://img.xkw.com/dksih/QBM/2021/10/10/2826527973867520/2826597516083200/STEM/5e33727255384bc0bbc1ddac13a5a066.png?resizew=210)
(1)证明:
在同一个平面上;
(2)设直线
与平面
所成的角为
,直线
与平面
所成的角为
,判断
与
的大小关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3182a76f1a691c8ce96731f69c557d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b323ecfca28fb7da92643357158b3e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b2e7cf650d04d4da289de3ed87634a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b72169c29ddb8b22efe75d0c5775ee57.png)
![](https://img.xkw.com/dksih/QBM/2021/10/10/2826527973867520/2826597516083200/STEM/5e33727255384bc0bbc1ddac13a5a066.png?resizew=210)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de152b0c5f896197d4d2c7f7113276de.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4cd2b33bd983a9ed6575b9de04a46a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4cd2b33bd983a9ed6575b9de04a46a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
您最近一年使用:0次
2021-10-10更新
|
801次组卷
|
3卷引用:广东实验中学2022届高三上学期11月阶段性考试数学试题
名校
解题方法
2 . 如图,在三棱锥A-BCD中,AB⊥平面BCD,E为棱AC上的一点,且BE⊥平面ACD.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/9ad79e88-a1b6-4cef-bfa6-69edda63be6b.png?resizew=136)
(1)证明:BC⊥CD;
(2)设BC=CD=1,BC与平面ACD所成的角为45°,求二面角B-AD-C的大小.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/9ad79e88-a1b6-4cef-bfa6-69edda63be6b.png?resizew=136)
(1)证明:BC⊥CD;
(2)设BC=CD=1,BC与平面ACD所成的角为45°,求二面角B-AD-C的大小.
您最近一年使用:0次
2021-09-07更新
|
225次组卷
|
2卷引用:广东省揭阳市普宁市华侨中学2021-2022学年高一下学期第三次月考数学试题
3 . 如图,已知三棱柱
的所有棱长均为
,
,二面角
为
.
![](https://img.xkw.com/dksih/QBM/2021/7/7/2759221139734528/2779081402818560/STEM/2791e078a40346aeaaf610c22b76e497.png?resizew=291)
(1)求直线
与平面
所成的角;
(2)求点
到平面
的距离.
![](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/7768503b1ad4775258b2f1a71c413086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea67423ce6963c0972867306169f17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://img.xkw.com/dksih/QBM/2021/7/7/2759221139734528/2779081402818560/STEM/2791e078a40346aeaaf610c22b76e497.png?resizew=291)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
您最近一年使用:0次
名校
4 . 如图,在三棱锥
中,
,
为
的中点
![](https://img.xkw.com/dksih/QBM/2021/6/14/2742660929912832/2782263620673536/STEM/b79e6b5a-8327-4f69-ab38-18094a821c0d.png?resizew=187)
(1)证明:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
(2)若点
为
的中点,求
与平面
所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2aaed1e9ead175f30f7130569d0411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e016f7a64d3b7d1f8f802c8b9839ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://img.xkw.com/dksih/QBM/2021/6/14/2742660929912832/2782263620673536/STEM/b79e6b5a-8327-4f69-ab38-18094a821c0d.png?resizew=187)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84ad334c6d980f01aaa3bf6be547a7fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d260c4df7b0dc180af6980d21f3371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8869a52b7ac41487a4f453c19ae1361.png)
您最近一年使用:0次
2021-08-09更新
|
373次组卷
|
2卷引用:广东省佛山市第四中学2020-2021学年高二上学期第一次月考数学试题
5 . 如图,三棱锥
中,
,
,
,
,点
是
的中点,点
是
的中点,点
在
上且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/a8bd329f-cb50-4912-af4c-bc7b0ea7fe12.png?resizew=222)
(1)证明:
平面
;
(2)求直线
与平面
所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbb05b8b630052ff544249ebd72d95d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e486a1aad96167ff62f6fb5136e0bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36bd3b2701a86536663fbe6b65a7c61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19453d6b3ccfbed7b7dc0308aadc6bd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/a8bd329f-cb50-4912-af4c-bc7b0ea7fe12.png?resizew=222)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/debdc6632a4877e5131d3da25cda8b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70db40c42655327adee01caedfc9d50c.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2021-03-06更新
|
439次组卷
|
2卷引用:广东省珠海市2021届高三一模数学试题
名校
6 . 如图所示,在四棱锥
中,底面
为平行四边形,
,O为
的中点,
平面
,
,M为
的中点.
![](https://img.xkw.com/dksih/QBM/2021/1/30/2647330291769344/2648168026497024/STEM/42a992ef-d207-4f9d-a1e7-e9c24f18e6e2.png)
(1)证明:
平面
;
(2)求直线
与平面
所成角的正切值.
![](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/8b585df4e8cf80131f81d863871a841a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae890f9e8b32aa53a54158f24f4a87bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/2021/1/30/2647330291769344/2648168026497024/STEM/42a992ef-d207-4f9d-a1e7-e9c24f18e6e2.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30067b7b236d17af8a462f96a58d11bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68a7bf0da4f7c6f739d2e2461ad9b7.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2021-01-31更新
|
786次组卷
|
4卷引用:广东省惠州市六校2023-2024学年高二上学期10月联考数学试题
名校
解题方法
7 . 如图,在底面是正方形的四棱锥
中,
面
,
交
于点
,
是
中点,
为
上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/169e2b61-1209-4405-a353-bb53b50d1e42.png?resizew=187)
(1)确定点
在线段
上的位置,使
平面
,并说明理由.
(2)当二面角
的大小为
时,求
与底面
所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/169e2b61-1209-4405-a353-bb53b50d1e42.png?resizew=187)
(1)确定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a779876cdfb2c489ad0eaed0f73e6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)当二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1069d514c3c32aeabd274475ee209ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f785147690f83dcee0a0bc6c327e75a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
8 . 如图,在四棱锥
中,底面
是正方形,
面
,
,
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/2a034f0d-3312-4c4f-8115-761ca2ee7742.png?resizew=182)
(1)证明:直线
平面
;
(2)求
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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c20600902262b78f9bf0813a3e28c6de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b199a99e53d67ff4abf233930961a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7289f91e2b5041cf4efb4ff7a9d34def.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/2a034f0d-3312-4c4f-8115-761ca2ee7742.png?resizew=182)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/776fafdf6c6d9650c9be1a8934082eca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
9 . 已知四棱锥
,四边形
是边长为2的菱形,
,
,
,
为
中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/e35d8393-e188-4e21-b877-003501f898b1.png?resizew=189)
(1)证明:平面
平面
;
(2)求
与平面
所成的角.
![](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/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c5ace226a547e68702df548b08cb5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4fb2e1f711d92daf9e32e669ded7d7d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/e35d8393-e188-4e21-b877-003501f898b1.png?resizew=189)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5cb57ad734935d61676c8e7c81bc2f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
名校
10 . 已知三棱锥
,如图所示,
平面
,D为
中点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/36d484de-ad65-47fb-865a-7b7149f64a14.png?resizew=146)
(1)证明:
;
(2)若
与平面
所成的角的余弦值为
,
,求三棱锥
体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c1f7926063b58bdd51e92268856f89a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/36d484de-ad65-47fb-865a-7b7149f64a14.png?resizew=146)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f9425630dcfe5a824c44904d4f71e13.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d79e7020414add95907e061df505ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7d022859b8853d7be8f2bf6487a693.png)
您最近一年使用:0次