如图,在四棱锥
中,底面
是矩形,
,
,已知
,且
平面
,
,
.
平面PFG,并说明理由;
(2)若二面角
的余弦值为
,求PG与平面PEM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/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03d5b85618337a9d7d86d36fb30b370e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db807b09cc550f476b3f8fa0c6a14425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2567f15f36ff5188f82f3f8815f414c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6463cc2d538c07f029e0b13f7728d602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80deda85e1c07a6771f335fa392a2514.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c563ff3687fc88daaf60c17399616d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
21-22高一下·辽宁葫芦岛·期末 查看更多[4]
辽宁省葫芦岛市2021-2022学年高一下学期期末数学试题(已下线)专题强化训练四 直线与平面所成的角、二面角的平面角的常见解法(1)-《考点·题型·技巧》(已下线)第03讲 空间中平行、垂直问题10种常见考法归类(2)辽宁省大连市第三十六中学2022-2023学年高一下学期6月月考数学试题
更新时间:2022-07-21 13:54:16
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】如图,正三棱柱
的所有棱长均相等.
![](https://img.xkw.com/dksih/QBM/2021/7/1/2755077000650752/2780986416267264/STEM/8f8a985c-fa38-41ad-aba8-aa168a37d357.png?resizew=243)
(1)在图中作出过
与侧面
垂直的三棱柱的截面,并说明理由;
(2)求直线
与侧面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://img.xkw.com/dksih/QBM/2021/7/1/2755077000650752/2780986416267264/STEM/8f8a985c-fa38-41ad-aba8-aa168a37d357.png?resizew=243)
(1)在图中作出过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图所示,四边形ABCD是正方形,DE⊥平面ABCD,DE=DA=2.
(2)求AE与平面BDE所成的角的大小.
(2)求AE与平面BDE所成的角的大小.
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解答题-问答题
|
适中
(0.65)
名校
【推荐3】在四棱锥
中,平面PAB⊥平面ABCD,
为等腰直角三角形,
,底面ABCD为矩形,
,点E是AB的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/4/bfdbe1df-9f21-456e-952e-9f452060b01f.png?resizew=146)
(1)证明:EC⊥平面PED;
(2)若F是CD的中点,求直线PF与平面PBC所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9b9bb0f509e6f3d30858efb217c1f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/526908dfb46cf151b8ab1492a9d52047.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/4/bfdbe1df-9f21-456e-952e-9f452060b01f.png?resizew=146)
(1)证明:EC⊥平面PED;
(2)若F是CD的中点,求直线PF与平面PBC所成角的大小.
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解答题-证明题
|
适中
(0.65)
解题方法
【推荐1】如图所示,在直三棱柱
中,底面是等腰直角三角形,
,
.点D,
分别是棱AC,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/9ed14d6a-ac7f-47fd-8467-4dbff574c4b0.png?resizew=171)
(1)求证:
平面
;
(2)求点C到平面
的距离d;
(3)点E是直线
上一点,求平面
平面
时,线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1604adab63e6350177d8130123dca0f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/9ed14d6a-ac7f-47fd-8467-4dbff574c4b0.png?resizew=171)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
(2)求点C到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
(3)点E是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48fd8c448d1d1dfe499f7375d249ed25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f332eb13e2379aeedb236434947a8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e516121599c9fcc528121c00afcf52fc.png)
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】已知矩形
,设
是边
上的点,且
,现将
沿着直线
翻折至
,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/1/94a9c4f2-3106-4f64-807f-cc89288f33c8.png?resizew=223)
(1)当
为何值时,使平面
平面
;并求此时直线
与平面
所成角的正切值;
(2)设二面角
的大小为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c23f0df9a3d2ce1ab5697fa05f259b95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d00572a90232e08932317af2a53767.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdfe7976bd3f16bfef5c6f1b4f20f23.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/1/94a9c4f2-3106-4f64-807f-cc89288f33c8.png?resizew=223)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c44c1843ff6150ebc6aad3e34e477d2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926584088b939200d88e64318f2d4e6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)设二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d6ae88d9783ca76cdacda8a670e1a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7980e96d332aa0b4ed25c2dbff79b366.png)
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【推荐1】如图,已知菱形
所在平面与矩形
所在平面相互垂直,且
,
是线段
的中点,
是线段
上的动点.
与
所成的角是否为定值,试说明理由;
(2)若二面角
为
,求四面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5d1764c94af4b851e602135609108e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147310251a463539f66374c1f452fb67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8379ddbd4f02ccfa502592cc4eeae4f1.png)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图,在三棱锥
中,平面
平面
,
,
为
的中点.
;
(2)若
是边长为1的等边三角形,点
在棱
上,
,且二面角
的大小为
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21be01a95cdd3149512bf95d6084fdd6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46d76c5ac5c9f0a2ec064487c02c476e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324d453870b345da0c41977290192f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
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解答题-问答题
|
适中
(0.65)
【推荐3】如图,在四棱锥
中,
平面
中,四边形ABCD是正方形,点E在棱SD上,
.
![](https://img.xkw.com/dksih/QBM/2021/12/22/2878072515813376/2878976483426304/STEM/9c48a2a563994563b5718e204192532d.png?resizew=242)
(1)证明:
;
(2)若正方形ABCD的边长为1,二面角
的大小为45°,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166ac39e9b7ff52a66f89a66e2e2ac30.png)
![](https://img.xkw.com/dksih/QBM/2021/12/22/2878072515813376/2878976483426304/STEM/9c48a2a563994563b5718e204192532d.png?resizew=242)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dac702fe64edf1bc265da4b98cf2a0.png)
(2)若正方形ABCD的边长为1,二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f4096ff62b4f29932cd8c6eef661a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
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