如图,在四棱锥
中,底面
是矩形.已知
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/a91a9112-9d08-4fba-9b73-edef11b9ed6b.png?resizew=156)
(1)证明:
平面
;
(2)求异面直线PC与AD所成角的大小.
![](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/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6281306726065e7075c579b9b66537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e12bfde565540f059dd27ea47dfaa7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/a91a9112-9d08-4fba-9b73-edef11b9ed6b.png?resizew=156)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求异面直线PC与AD所成角的大小.
22-23高二上·上海静安·期中 查看更多[3]
上海市市西中学2022-2023学年高二上学期期中数学试题(已下线)重难点01 空间角度和距离五种解题方法-【满分全攻略】2022-2023学年高二数学下学期核心考点+重难点讲练与测试(沪教版2020选修一+选修二)(已下线)专题03直线与平面的位置关系(4个知识点6种题型)-【倍速学习法】2023-2024学年高二数学核心知识点与常见题型通关讲解练(沪教版2020必修第三册)
更新时间:2022-11-03 08:59:56
|
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解答题-问答题
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适中
(0.65)
解题方法
【推荐1】已知函数
的周期为
,
的最大值为
,且
.
(1)求
,
的值;
(2)若
,且
是方程
的两个实根,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf82e2e4a0f561c9122a459afd5a4919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01497577c7ae233a66a00aa6d9962e2d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b2bbd07fcdc2807d42e0b6c413e118.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c1f914da4657eca7865982b130b299.png)
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【推荐2】设直线的方程为
,其倾斜角为
.
(1)将倾斜角
表示成
的函数;
(2)①若
,求
的取值范围;
②若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c75c2de9b49cb21d8cf984b8c4abcdfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(1)将倾斜角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/299919e8853e876c09cfa835661c30d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06439f0cffe4414e015810b3c8c9bc53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,在直角梯形
中,
,
,
.直角梯形
可以通过直角梯形
以直线
为轴旋转得到,且平面
平面
.
![](https://img.xkw.com/dksih/QBM/2017/12/20/1842736631291904/1845869604462592/STEM/592e486e595e40bf846fae2bfa16ac59.png?resizew=239)
(I)求证:
.
(II)求直线
和平面
所成角的正弦值.
(III)设
为
的中点,
,
分别为线段
,
上的点(都不与点
重合).若直线
平面
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37591109b0a0ec5ffe2133f83310eca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b377f22aafd3742ad860f77abaacef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e487a17de7a6c49c271f978c6ee684d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c674dc5024374f53920947c4cf4baf11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2017/12/20/1842736631291904/1845869604462592/STEM/592e486e595e40bf846fae2bfa16ac59.png?resizew=239)
(I)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67e04e6b3992ff6e57743171749a5a81.png)
(II)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(III)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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【推荐2】(1)如图1,在正四棱锥P﹣ABCD中,
,E、F分别为PB、PD的中点,平面AEF与棱PC交于点G,求平面AEGF与平面ABCD所成二面角的大小;
(2)如图2,在长方体ABCD﹣A'B'C'D'中,|AB|=2,|AD|=|AA'|=1.求顶点B'到平面D'AC的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb1e793d2398dd9c749767222b61cea.png)
(2)如图2,在长方体ABCD﹣A'B'C'D'中,|AB|=2,|AD|=|AA'|=1.求顶点B'到平面D'AC的距离.
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解答题-证明题
|
适中
(0.65)
解题方法
【推荐1】如图,已知四棱锥
的底面是边长为2的菱形,
,
,
,点E,F分别是
,
的中点.
![](https://img.xkw.com/dksih/QBM/2021/6/11/2740933297233920/2740970709573632/STEM/8aae3ddea7134c9f9d70eef46c91c71f.png?resizew=211)
(1)求证:
平面
;
(2)求异面直线
与
所成角的正弦值;
(3)求直线
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/ecbb2dce15f3d0fe839688575d2a8ff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71826134c3080aa75becc655a9089855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ad23a445f27a0d5f79a9523bee4cfb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2021/6/11/2740933297233920/2740970709573632/STEM/8aae3ddea7134c9f9d70eef46c91c71f.png?resizew=211)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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(0.65)
名校
解题方法
【推荐2】如图,斜三棱柱
的棱长均为2,侧面
底面
,且
.
![](https://img.xkw.com/dksih/QBM/2021/2/7/2653155599892480/2663360482672640/STEM/5d14dc00-484a-44f8-9a53-b5b5e98f29aa.png?resizew=233)
(1)求直线
与侧面
所成角的正弦值;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab9019b1b3ff14f7ec329936108c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f95a09aa385a3591facd2132dde809.png)
![](https://img.xkw.com/dksih/QBM/2021/2/7/2653155599892480/2663360482672640/STEM/5d14dc00-484a-44f8-9a53-b5b5e98f29aa.png?resizew=233)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9961e091f180e964a962adf6916f33c8.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6997af36a239195f7b55557242cb03c4.png)
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