如图,在三棱柱
中,
是边长为4的正方形,
为矩形,
,
.
(1)求直线
与平面
所成角的正弦值;
(2)证明:在线段
上是否存在点
,使得
点到平面
的距离为2,若存在,求
的值.不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/23/bbb1ba47-dbbe-4d42-9651-619444024fa5.png?resizew=122)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2f7554a52815bfa0f4d75221ba7397.png)
(2)证明:在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2f7554a52815bfa0f4d75221ba7397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
22-23高二上·山东淄博·阶段练习 查看更多[3]
山东省淄博实验中学、淄博齐盛高中2022-2023学年高二上学期11月第一次模块考试数学试题(已下线)1.4.2 用空间向量研究距离、夹角问题【第三课】(已下线)湖南省长沙市长郡中学2024届高三上学期月考(二)数学试题变式题19-22
更新时间:2023-09-22 22:24:04
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相似题推荐
解答题-问答题
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名校
【推荐1】如图甲,已知直角梯形ABCD,
,
,
,E为AB的中点,将
沿DE折起,使点A到达点F(如图乙),且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/4a0c6db1-fd6a-4011-ae07-af2e8005a3de.png?resizew=344)
(1)证明:
平面FEB;
(2)求四棱锥F-BCDE的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88456229a5cf44fb654e9e16e65f5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9723a6e093c297b001436e8932b1820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93a377c5f46538040eeca46c001b430d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/4a0c6db1-fd6a-4011-ae07-af2e8005a3de.png?resizew=344)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
(2)求四棱锥F-BCDE的体积.
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解答题-证明题
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解题方法
【推荐2】直角梯形
中,
,
,
,
,
,将梯形沿中位线
折起使
,并连接
、
得到多面体
,连接
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/4/13/2957283756580864/2958142468210688/STEM/72d861223fc5448198a11c115caf115d.png?resizew=279)
(1)求证:
平面
;
(2)求
到平面
的距离.
![](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/635c0e8cd497fd3d766fede583f2e320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a48e31deb78dadacc7e128ef3eb2a054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e3878dcf86deee763b9fbd2d4ed2a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/2022/4/13/2957283756580864/2958142468210688/STEM/72d861223fc5448198a11c115caf115d.png?resizew=279)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1e0bd4b30dc777ac9da80f6baa3eb31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926584088b939200d88e64318f2d4e6c.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
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解答题-证明题
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【推荐1】如图,直三棱柱
的所有棱长都是2,
分别是
的中点.
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98842968c75427c940b34de391a3a778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d06f8edd1a1f18ca2dae700c6a29ab4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/23/2b6a3e38-044b-4132-8316-b256242a0019.png?resizew=180)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
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解答题
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较易
(0.85)
【推荐2】如图,在直三棱柱
中,
,
为棱
的中点,
.
![](https://img.xkw.com/dksih/QBM/2018/3/21/1906688215408640/1907720539824128/STEM/3be99217950847c18fb1bc175f322125.png?resizew=151)
(1)证明:
平面
;
(2)设二面角
的正切值为
,
,
为线段
上一点,且
与平面
所成角的正弦值为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9d5815dc775d5a5810fff0b016a8d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5adb94abf5e78c3bf7d9bced713017a.png)
![](https://img.xkw.com/dksih/QBM/2018/3/21/1906688215408640/1907720539824128/STEM/3be99217950847c18fb1bc175f322125.png?resizew=151)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d13793af05742c91532f43727eb9780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
(2)设二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c079889aea502b5783046f78728eb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c14ff9b66f21c05e52dc3c8908c2df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a971d9316ecd159a8f03e439be230c76.png)
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【推荐2】如图,在正方体ABCD-A1B2C3D4中,E,F,G,H分别是AB,BC,CC1,DD1的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/b3170a5c-c473-4b45-9c4a-4686e6f4e018.png?resizew=151)
(1)证明:平面B1EF⊥平面ABGH.
(2)若正方体的棱长为1,求点D1到平面B1EF的距离.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/b3170a5c-c473-4b45-9c4a-4686e6f4e018.png?resizew=151)
(1)证明:平面B1EF⊥平面ABGH.
(2)若正方体的棱长为1,求点D1到平面B1EF的距离.
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