解题方法
1 . 如图所示,正四棱锥
中,
为底面正方形的中心,侧棱
与底面
所成的角的正切值为
.
![](https://img.xkw.com/dksih/QBM/2015/11/27/1572318054416384/1572318060503040/STEM/4aba858b955f48458788e1026010694a.png)
(1)求侧面
与底面
所成的二面角的大小;
(2)若
是
的中点,求异面直线
与
所成角的正切值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6153163fecdf3f410411048428ccaef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839c7616cd0d90265f4b2c9c021254fe.png)
![](https://img.xkw.com/dksih/QBM/2015/11/27/1572318054416384/1572318060503040/STEM/4aba858b955f48458788e1026010694a.png)
(1)求侧面
![](https://img.xkw.com/dksih/QBM/2015/11/27/1572318054416384/1572318060503040/STEM/ea9f36539e3145a2979c80526def614b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2015/11/27/1572318054416384/1572318060503040/STEM/248367ce07af485bbc0510b220e24a76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/2015/11/27/1572318054416384/1572318060503040/STEM/4602ed2d0f2249fdab0cc2a52ff2cd17.png)
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2卷引用:河南省许昌市2020-2021学年高一上学期期末数学(文)试题
2 . 如图,在棱长为
的正方体
中,
为
的中点,
为
上任意一点,
,
为
上任意两点,且
的长为定值,则下面的四个值中不为定值的是( )
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572124333285376/1572124339167232/STEM/3f953cdb-bc0d-4e4b-a9d8-7d7e8dd36a7d.png?resizew=238)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572124333285376/1572124339167232/STEM/3f953cdb-bc0d-4e4b-a9d8-7d7e8dd36a7d.png?resizew=238)
A.点![]() ![]() | B.三棱锥![]() |
C.直线![]() ![]() | D.二面角![]() |
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8卷引用:2016届河南省洛阳市高三考前综合练习五理科数学试卷
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3 . 如图所示,在正三棱柱
中,底面边长为
,侧棱长为
,
是棱
的中点.
![](https://img.xkw.com/dksih/QBM/2010/5/29/1569750320005120/1569750325248000/STEM/88b9185b052843cc94f5cbf1cf15ed50.png)
(Ⅰ)求证:
平面
;
(Ⅱ)求二面角
的大小;
(Ⅲ)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f47d6a88e962cd790d2f159c021ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b234f945df3ebb9fe5e3e903fad696b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/2010/5/29/1569750320005120/1569750325248000/STEM/88b9185b052843cc94f5cbf1cf15ed50.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5830646a912c3a916beac4f88c116b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5888bec948373f3854258ad80171073d.png)
(Ⅱ)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51a78cc38c9df701d6efb6e9b707cd3d.png)
(Ⅲ)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5888bec948373f3854258ad80171073d.png)
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4 . 如图,在直三棱柱ABC-A1B1C1中.∠ BAC=90°,AB=AC=AA1 =1.D是棱CC1上的一点,P是AD的延长线与A1C1的延长线的交点,且PB1∥平面BDA.
(I)求证:CD=C1D:
(II)求二面角A-A1D-B的平面角的余弦值;
(Ⅲ)求点C到平面B1DP的距离.
(I)求证:CD=C1D:
(II)求二面角A-A1D-B的平面角的余弦值;
(Ⅲ)求点C到平面B1DP的距离.
![](https://img.xkw.com/dksih/QBM/2011/6/15/1570238676590592/1570238681956352/STEM/eb749ad7d68147aba6b00c1d6ab87276.png?resizew=261)
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5卷引用:河南省安阳县实验中学2022-2023学年高二上学期收心考数学理科试题
5 . 如图,
与
都是边长为2的正三角形,平面
平面
,
平面
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/14/c9b5e337-5f5d-4c6e-9804-bb4efc450bd6.png?resizew=164)
(1)求点
到平面
的距离;
(2)求平面
与平面
所成二面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df6d51738ac1bc8b9530ea4a55745c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13fd8dabc5a9c5f42aa21044007c7bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c72b92177ddfe056e6f90af4f37e64d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/14/c9b5e337-5f5d-4c6e-9804-bb4efc450bd6.png?resizew=164)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2730b513bd3359c3dfe6567e04f5ef9.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68a7bf0da4f7c6f739d2e2461ad9b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
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5卷引用:河南省商丘市第一高级中学2019-2020高二下学期期中考试数学(理)试卷
河南省商丘市第一高级中学2019-2020高二下学期期中考试数学(理)试卷2010年普通高等学校招生全国统一考试(江西卷)数学(已下线)上海市华东师范大学第二附中2018-2019学年高三上学期期中数学试题江西省等七省联考2024届高三上学期最后一卷数学猜题卷(一)(已下线)第七章 应用空间向量解立体几何问题拓展 专题二 平面法向量求法及其应用 微点1 平面法向量求法及其应用(一)【培优版】