1 . 在四棱锥P-ABCD中,底面是边长为2的菱形,
,对角线AC与BD相交于点O,PO⊥平面ABCD,PB与平面ABCD所成的角为60°.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/f69856cb-34ac-4ffe-a56f-7d4cfd45f3cf.png?resizew=185)
(1)求四棱锥P-ABCD的体积;
(2)若E是PB的中点,求异面直线DE与PA所成角的余弦值;
(3)求二面角C-PB-D的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e15be0b520fbe4fbceaddf4b5ade06.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/f69856cb-34ac-4ffe-a56f-7d4cfd45f3cf.png?resizew=185)
(1)求四棱锥P-ABCD的体积;
(2)若E是PB的中点,求异面直线DE与PA所成角的余弦值;
(3)求二面角C-PB-D的正切值.
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2022-10-17更新
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4卷引用:四川省遂宁中学校2022-2023学年高二上学期9月月考数学(理)试题
四川省遂宁中学校2022-2023学年高二上学期9月月考数学(理)试题(已下线)专题25 二面角相关问题训练-【重难点突破】2021-2022学年高一数学常考题专练(人教A版2019必修第二册)江西省赣州市赣县第三中学2022-2023学年高二上学期开学考试数学试题(已下线)第19讲 空间图形的表面积和体积
名校
解题方法
2 . 如图所示,四棱锥
的底面
是平行四边形,
分别是棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/10/cccfeee3-4930-4f22-8cc4-f456800e75f8.png?resizew=179)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb986e3dee4aa65b92cda9b11c1b8e18.png)
平面
;
(2)若
,求二面角
的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790e1f26a6b7010bab031c5bfc655c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b64b03bdd6fe567c99c15220aebbd63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c16bb78f27578cedfb680bb19c97e8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/10/cccfeee3-4930-4f22-8cc4-f456800e75f8.png?resizew=179)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb986e3dee4aa65b92cda9b11c1b8e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9e54073845d1ddb3526c9887524c197.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b6c9d7d62fe841774b87372a884a48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4294b7141d394654841008ac9b40dab.png)
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2022-10-07更新
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4卷引用:四川省成都市第八中学校2022-2023学年高三上学期第一次摸底考试理科数学试题
3 . 如图,点A,B,C在球心为O的球面上,已知
,
,
,球O的表面积为
,下列说法正确的是( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/25/ba962dc3-32d5-4672-8af3-a88ecba2ed42.png?resizew=153)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26fdd8e57562ba94e10e7f1d770826d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63850c0f9ba71c7d6f20903707b2d98e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/25/ba962dc3-32d5-4672-8af3-a88ecba2ed42.png?resizew=153)
A.![]() |
B.平面![]() |
C.OB与平面ABC所成角的正弦值为![]() |
D.平面OAB与平面ABC所成角的余弦值为![]() |
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2022-09-23更新
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3卷引用:四川省蓉城名校联盟2022-2023学年高三上学期入学联考文科数学试题
4 . 已知直三棱柱
中,
为正方形,
分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/2022/7/14/3022512448200704/3027139909427200/STEM/2ca0320881ad4cd9b6f0b774466c786e.png?resizew=165)
(1)证明:
平面
;
(2)若
是边长为2正三角形,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f2185273bf04c11118c7954f7ec822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e316b0bba952ea2164c5321c6c3c41f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876f208635a511c8dc89da1dad21c868.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c92b5799d12ea37de46d7c942ce7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2022/7/14/3022512448200704/3027139909427200/STEM/2ca0320881ad4cd9b6f0b774466c786e.png?resizew=165)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d6d03e83c2e2f6a03bf30dd1038dc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdcfe69b939fd1c271747fe9d37ccdf9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82647a99e63a821cef77923a0682ef6c.png)
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2022-07-21更新
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2卷引用:四川省凉山彝族自治州2021-2022学年高一下学期期末数学(理)试题
名校
5 . 在三棱锥P−ABC中,AB=BC,BC⊥平面PAB,平面PAC⊥平面ABC.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/28/832db05e-64c8-439f-a97b-63a7229a16cc.png?resizew=149)
(1)证明:PA⊥平面ABC;
(2)若D为PC的中点,且
,求平面DAB与平面ABC所成二面角的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/28/832db05e-64c8-439f-a97b-63a7229a16cc.png?resizew=149)
(1)证明:PA⊥平面ABC;
(2)若D为PC的中点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d827c3694aaa02490e0a9c01b45ddc5.png)
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2022-07-16更新
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2卷引用:四川省成都列五中学2023-2024学年高二上学期阶段性考试(一)数学试题
名校
解题方法
6 . 正方体
中,二面角
的平面角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cf606fa4e3090df2ad3cd3b60c6f239.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-07-15更新
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|
3卷引用:四川省巴中市恩阳区2022-2023学年高二上学期期中数学试题
名校
7 . 如图所示,四棱锥
中,底面
为矩形,
平面
,
,
,点
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/9/71d2c0c7-1591-45de-a21d-abd4ee4d1f39.png?resizew=251)
(1)证明:
;
(2)求点
到
的距离;
(3)求二面角
的大小.
![](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/f83a04565a8ebaa111894b724b0ba266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88c44f558705de3bcefcfc0ece96b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/9/71d2c0c7-1591-45de-a21d-abd4ee4d1f39.png?resizew=251)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4486d52b6e410fd7b60428121d96cef.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbeab80976db9b4689b9446cda06196a.png)
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2022-07-07更新
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5卷引用:四川省内江市第六中学2022-2023学年高一(创新班)下学期入学考试数学试题
名校
8 . 如图,在三棱锥
中,
,
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/1390b603-eb41-49b3-96f5-c7dd5f47c377.png?resizew=167)
(1)求证:平面
平面
;
(2)若
,求平面
与平面
的夹角大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307d38cc7012c328f1f22aa793fe76d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7a9d52d371e73729589665ccd25bc82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d092c7e025551511ce7a5534a8e37f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/1390b603-eb41-49b3-96f5-c7dd5f47c377.png?resizew=167)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6d0567ee284567a5d42b3c0b95083ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf2800c9fab90fb82200f5ac496969c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dfaad4c4467e27421876d8f2a4371d2.png)
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2022-07-07更新
|
1056次组卷
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7卷引用:四川省泸县第一中学2023届高考适应性考试数学(理)试题
名校
9 . 在正方体
中,下列结论正确的有( )
①异面直线
与
所成角的大小为
; ②直线
与直线
垂直;
③直线
与平面
所成角的正切值为
; ④平面
与平面
夹角的正切值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
①异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
③直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0006f9ab30d42854e5c71c96a15ad3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
A.①② | B.①②③ | C.②③④ | D.③④ |
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2022-07-04更新
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6卷引用:四川省成都市蓉城名校联盟2021-2022学年高二下学期期中联考文科数学试题
10 . 如图,已知二面角
,且
,
,
,C,D是垂足,平面PCD与AB交于点H.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/a178b3d6-6f06-4bbe-91d1-04b5a60fa5d1.png?resizew=245)
(1)求证:AB⊥平面PCD;
(2)若PC=PD=CD=1,试求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ce3f859c6b9a0cfc98bdf5b3d0f395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74742135157ce66703f899d52748b78b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d9105f139c37c74dcab39b136c267eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf90b31eb064a12d3ed6bffaaccc8737.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/a178b3d6-6f06-4bbe-91d1-04b5a60fa5d1.png?resizew=245)
(1)求证:AB⊥平面PCD;
(2)若PC=PD=CD=1,试求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ce3f859c6b9a0cfc98bdf5b3d0f395.png)
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