1 . 在梯形ABCD中,
,
,
,P为AB的中点,线段AC与DP交于O点,将
沿AC折起到
的位置,使得平面
⊥平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/e5de1c14-f60a-43eb-9ec8-5a075f751db1.png?resizew=366)
(1)求证:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde275553b4e49f5adffe606875c6ec3.png)
(2)平面ABC与平面
夹角的余弦值
(3)线段
上是否存在点Q,使得CQ与平面
所成角的正弦值为
?若存在,求出
的值:若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89ee6576c35c682bcb0eff43bd958d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6829c6214e60edbfbf1e31601c6bcb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf468f5132e14ee1d8cc766808b11af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f921b462ee12ad5749ea45d75f609b7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/e5de1c14-f60a-43eb-9ec8-5a075f751db1.png?resizew=366)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002cc6a0373255f39172cdee62fb6b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde275553b4e49f5adffe606875c6ec3.png)
(2)平面ABC与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e95fa1c3bcd3d0464fcadf248e90ace.png)
(3)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be451ce5fad246389ccf4864929d81d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e95fa1c3bcd3d0464fcadf248e90ace.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80dbac2006d30c49943f0241fd976eb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b188172a322d69106c638e1603ac13f.png)
您最近一年使用:0次
名校
2 . 如图1,在平面四边形
中,
∥
,
,将
沿
翻折到
的位置,使得平面
⊥平面
,如图2所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/12/79c91260-0750-4710-adea-510cf7121b90.png?resizew=324)
(1)设平面
与平面
的交线为
,求证:
;
(2)在线段
上是否存在一点
(点
不与端点重合),使得二面角
的余弦值为
,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96e070966ddc1d779fcfae475715936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd8bf6b4c15f19b78f979716b3d4f0f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72e49817548cb45b3d1e58570644c6fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/12/79c91260-0750-4710-adea-510cf7121b90.png?resizew=324)
(1)设平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5da631296d53a08d56fb5f9bec2376c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa145a3e4f18f784ddf4869e0bf904c5.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b4e098c6194f55462b24f552f5967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f1145c162038df3c7184d9201c628e.png)
您最近一年使用:0次
2023-02-11更新
|
1114次组卷
|
7卷引用:北京市石景山区2022届高三一模数学试题
北京市石景山区2022届高三一模数学试题北京市昌平区第二中学2022-2023学年高二上学期10月月考数学试题北京卷专题20空间向量与立体几何(解答题)(已下线)必刷卷02-2022年高考数学考前信息必刷卷(新高考地区专用)重庆市2023届高三下学期开学摸底数学试题云南省昆明市第一中学2022-2023学年高二下学期期中考试数学试题(已下线)第09讲 拓展三:二面角的传统法与向量法(含探索性问题,7类热点题型讲练)-【帮课堂】2023-2024学年高二数学同步学与练(人教A版2019选择性必修第一册)
名校
解题方法
3 . 如图,在棱长为2的正方体
中,点M为线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/c4111e02-113d-4ae8-bd74-89c43e25fef0.png?resizew=148)
(1)求证:
;
(2)求平面
与平面
夹角的余弦值;
(3)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/c4111e02-113d-4ae8-bd74-89c43e25fef0.png?resizew=148)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e862713d078c4f06ec1f15ccd6f5a1f7.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1774d0570a0ecfcdeb274828d7f4a769.png)
(3)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1774d0570a0ecfcdeb274828d7f4a769.png)
您最近一年使用:0次
2022-11-10更新
|
367次组卷
|
4卷引用:北京市顺义区杨镇第一中学2022-2023学年高二上学期期中数学试题
名校
4 . 如图,在正方体
中,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/7/726c5a24-1dcf-4d63-8f67-d0e661eff4bf.png?resizew=180)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
平面
;
(2)设
是棱
上一点,当二面角
的余弦值为
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/7/726c5a24-1dcf-4d63-8f67-d0e661eff4bf.png?resizew=180)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(2)设
![](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/8e4cb797a03b0d96fa146543101f993c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e08e91d2fa9519a5f48d488176700499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6fd3cefafb2088a8b68fde9fd0eee7.png)
您最近一年使用:0次
5 . 如图,在四棱锥
中,平面
平面
,
,
,
,
,
,
,点O是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/18d6f4d0-c1a7-47eb-ba46-9188e77a763a.png?resizew=159)
(1)求证:
;
(2)求二面角
的余弦值;
(3)在棱
上是否存在点M,使得
平面
?若存在,求
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c4340dcffb0783d118a587e5352a2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a8d346469e1777c10b4f972c3e51f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/18d6f4d0-c1a7-47eb-ba46-9188e77a763a.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734a1f7f33f1bb52c0046a618faf769e.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870d5bbe06c91f5c88ccbaa317ce3e72.png)
(3)在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f369bec2d5682bf6b8b317a08aff546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15b63176f43bc7a0654d0f6f45e7429.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25f48d2e4aca820cdc0fa468b7930d0.png)
您最近一年使用:0次
2023-01-06更新
|
664次组卷
|
2卷引用:北京市朝阳区2022-2023学年高二上学期数学期末试题
6 . 如图,在四棱锥
中,
平面
,
,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/50b24b79-520a-407f-b675-04051b9b22be.png?resizew=159)
(1)求证:
平面
;
(2)求平面
与平面
夹角的余弦值;
(3)在棱
上是否存在点G(G与P,B不重合),使得
与平面
所成角的正弦值为
?若存在,求
的值,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.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/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8248429104b06a37cd34ab341333706b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/50b24b79-520a-407f-b675-04051b9b22be.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(3)在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6729fb0c5e5e9549035590144b73144.png)
您最近一年使用:0次
2023-01-05更新
|
654次组卷
|
2卷引用:北京市丰台区2022-2023学年高二上学期数学期末练习数学试题
名校
7 . 如图,在三棱柱
中,侧面
为正方形,平面
平面
,
,M,N分别为
,AC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/92aaa495-4659-4e6b-8b19-fb30bb71bfae.png?resizew=182)
(1)求证:
平面
;
(2)若
,求直线AB与平面BMN所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eff0db05826cbff651faf0144904b32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/92aaa495-4659-4e6b-8b19-fb30bb71bfae.png?resizew=182)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1be642ddd61c3ad26bcbe2dc42e3512.png)
您最近一年使用:0次
2022-11-11更新
|
994次组卷
|
8卷引用:北京市海淀区中国人民大学附属中学2023届高三上学期期末数学模拟试题
名校
8 . 如图,在四棱锥
中,底面
为正方形,
底面
,
,
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/35604eef-9477-44d6-865c-f765ad75c7af.png?resizew=158)
(1)证明:
;
(2)求异面直线
与
所成角;
(3)求平面
和平面
所成角的余弦值.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a109c829d652632a88ade6924fcda206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/35604eef-9477-44d6-865c-f765ad75c7af.png?resizew=158)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4611ceb2a28f7a7e4d24266d7f99b22.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(3)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e2da608b66c9aee03e2503388ba4fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
2022-11-07更新
|
559次组卷
|
3卷引用:北京市第 八十中学2022-2023学年高二上学期期中考试数学试题
9 . 在如图所示的几何体中,正方形
与梯形
所在平面相交,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/1e3705cf-bc51-44b3-9be2-f4544ea1df1c.png?resizew=175)
(1)证明:
平面
;
(2)若
平面
,试求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d525d8b43670233010b604ddf383b4c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c56903f8f497bc868ef67bd3d8593d0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/1e3705cf-bc51-44b3-9be2-f4544ea1df1c.png?resizew=175)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2b5cfae407016cad45bbdefea05833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
您最近一年使用:0次
名校
10 . 如图,矩形
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c707f0202ec1aa233e1eeacc7a4587d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e4201ad1d4e25974c60439c2a561c08.png)
,平面
与棱
交于点G.
;
(2)求直线
与平面
夹角的正弦值;
(3)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d5f5199a80748d7a3afa1ac0c99135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c707f0202ec1aa233e1eeacc7a4587d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e4201ad1d4e25974c60439c2a561c08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ccb204e61b8daace3f89787e8fdd39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df55452b4b5fcdcb71f713b736f8b9e1.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a06f9624936200b73a5b0ce0b5bdfad.png)
您最近一年使用:0次
2022-10-26更新
|
700次组卷
|
2卷引用:北京市丰台区第十二中学2021-2022学年高二上学期期中数学试题