如图,已知矩形ABCD所在平面外一点P,PA⊥平面ABCD,E、F分别是AB、PC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/8d1b4906-42f2-4383-95b0-a8407cefc3c3.png?resizew=179)
(1)求证:
;
(2)若∠PDA=45°,求EF与平面ABCD所成角的大小.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/8d1b4906-42f2-4383-95b0-a8407cefc3c3.png?resizew=179)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8082db50586c0b735c9b8b5822c1156.png)
(2)若∠PDA=45°,求EF与平面ABCD所成角的大小.
21-22高二·全国·单元测试 查看更多[5]
沪教版(2020) 必修第三册 同步跟踪练习 第10章 本章测试吉林省东北师范大学附属中学2022-2023学年高二上学期大练习一数学试题 上海市川沙中学2022-2023学年高二上学期9月月考数学试题第10章 空间直线与平面(单元提升卷)-2022-2023学年高二数学考试满分全攻略(沪教版2020必修第三册)(已下线)高二数学上学期【第一次月考卷】(测试范围:第1~2章)-2022-2023学年高二数学考试满分全攻略(人教A版2019选择性必修第一册)
更新时间:2022-04-23 08:28:38
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解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,在四棱锥
中,O是
边的中点,
底面
.在底面
中,
.
![](https://img.xkw.com/dksih/QBM/2021/3/29/2688477742915584/2688501080498176/STEM/aaf041cc-5b82-46b7-9504-42d35e45a0cc.png)
(1)求证:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b114d2cfa825d1340daa80b5a5df0e80.png)
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![](https://img.xkw.com/dksih/QBM/2021/3/29/2688477742915584/2688501080498176/STEM/aaf041cc-5b82-46b7-9504-42d35e45a0cc.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307807ee10071bafbe922eb18d2517d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f457418e6a7e21f0ed0bf490a3709c.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e657a4a33ed01c3a2807218100efbef.png)
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解答题-证明题
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适中
(0.65)
【推荐2】在如图所示的几何体中,四边形
是菱形,
是矩形,
平面
,
,
,
,E为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/a902a8b2-7110-4f76-bc53-dd9e1f7938d2.png?resizew=203)
(1)求证:
平面
;
(2)求平面
与平面
夹角的余弦值.
(3)在线段
上是否存在点P,使直线
与平面
所成的角为
?若存在,求出
的长;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ab4fdfc612c9fa2dd8ae24904192d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4196374b64beb85418d3a1c66fc772b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf80b036459da6dcb841a4bbe3859fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5564681937f41e1489d69b20a71f9222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/a902a8b2-7110-4f76-bc53-dd9e1f7938d2.png?resizew=203)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1b1a1e1538266e4e46b21dfd943fb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711da913d92fc989e581bcfdfe092a18.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558ce69401f3c97930f00ba0e2aa6647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c78b8e4a2a5e11b829ab96616dba3e.png)
(3)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2730b513bd3359c3dfe6567e04f5ef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
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解答题-问答题
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适中
(0.65)
【推荐3】如图,三棱柱
中,
平面
,
,
,
,
,
是
的中点,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/de901802-e4a9-42ad-bbe6-d22a01a88ddf.png?resizew=203)
(Ⅰ)证明:
平面
;
(Ⅱ)
是线段
上一点,且直线
与平面
所成角的正弦值为
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a9ad711b25c36dae0c2a2cedff9954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25e8fc3dda4f8b45491514b6e22a962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d97f616f0f32beed421129cbbb4db8d9.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/de901802-e4a9-42ad-bbe6-d22a01a88ddf.png?resizew=203)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78172568aac9805d2ea2d5f742bf80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7ae8d6b308aee3387116f0ec92339d.png)
(Ⅱ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5846494f0ee2c4ab2d1cc32b785adc3.png)
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解题方法
【推荐1】如图,四棱锥P﹣ABCD的底面ABCD为正方形,PD⊥底面ABCD,PD=AD.
(1)求证:平面PAC⊥平面PBD;
(2)求PC与平面PBD所成的角.
(1)求证:平面PAC⊥平面PBD;
(2)求PC与平面PBD所成的角.
![](https://img.xkw.com/dksih/QBM/2011/5/12/1570194903048192/1570194908250112/STEM/a77fc80a80cc4cc2a4df21990bc0e71d.png?resizew=158)
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解答题-证明题
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适中
(0.65)
名校
【推荐2】如图,在直三棱柱
中,
,
,E为线段
的中点.
![](https://img.xkw.com/dksih/QBM/2022/7/13/3021544043560960/3023577646612480/STEM/3867385c98514522b71c4fcc07b1987f.png?resizew=213)
(1)求证:平面
平面
;
(2)求直线
与平面
所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3be3dcde7b744f420a588cb8dd5b01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://img.xkw.com/dksih/QBM/2022/7/13/3021544043560960/3023577646612480/STEM/3867385c98514522b71c4fcc07b1987f.png?resizew=213)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88762049d100f82fc0635f93ad656c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becf2941e15d668d93ea6ed980afd0ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
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