如图,以AD所在直线为轴将直角梯形ABCD旋转得到三棱台
,其中
,
.
;
(2)若
,求直线AD与平面CDF所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a01abf5ae85221309ecf031f2cd872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a204736186742e998dd00acff244a3e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4151e948feebdf7b91fbe739feafa9bc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f7a28709ada2895cec9569e20cf272.png)
23-24高三上·浙江温州·期末 查看更多[6]
浙江省温州市2024届高三上学期期末考试数学试题(已下线)新题型01 新高考新结构二十一大考点汇总-3湖南省湘潭市湘潭县第一中学2024届高三下学期2月月考数学试题(已下线)浙江省绍兴市上虞区2022-2023学年高一下学期期末质量调研卷数学试题(已下线)专题01 高一下期末真题精选(2)-期末考点大串讲(人教A版2019必修第二册)广东省东莞市三校(东莞一中、东莞实验、东莞外国语)2023-2024学年高一下学期期中联考数学试卷
更新时间:2024-02-04 15:58:44
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相似题推荐
解答题-证明题
|
适中
(0.65)
名校
解题方法
【推荐1】如图,在底面为菱形的四棱锥
中,
,
.
(1)求证:平面
平面ABCD;
(2)已知
,求直线BN与平面ACN所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4117625867a74cd022584500c76deca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54572f037a78cc7dfec1afe08b3af70e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d99bc88196c306a7ec65806c9372beb4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/30/ffe6ced8-1cce-4542-91a2-c79234250806.png?resizew=175)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e05d8681a679bd31922e62480f69d55.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ca755049ca4971de25cc32c535275d.png)
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【推荐2】如图,等腰直角三角形ABC中,∠ABC=90°,EA⊥平面ABC,FC∥EA,EA=FC=AB=a.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/4001bbfa-a2a9-4832-8b85-9d9275457a5d.png?resizew=157)
(1)求证:AB⊥平面BCF;
(2)求证:A、B、C、E、F五点在同一个球面上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/4001bbfa-a2a9-4832-8b85-9d9275457a5d.png?resizew=157)
(1)求证:AB⊥平面BCF;
(2)求证:A、B、C、E、F五点在同一个球面上.
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解答题-证明题
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适中
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解题方法
【推荐1】如图,四棱锥
的底面为矩形,
,
面
,
是
的中点,
为
上一点,且
面
.
![](https://img.xkw.com/dksih/QBM/2011/4/2/1570100114989056/1570100120297472/STEM/5c1fae4f32574751b723e363a25b4fe6.png?resizew=193)
(1)证明:
为
的中点;
(2)若二面角
的平面角的余弦值为
求直线
与平面
所成的角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbe8961cca9440ea334ee049d109146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://img.xkw.com/dksih/QBM/2011/4/2/1570100114989056/1570100120297472/STEM/5c1fae4f32574751b723e363a25b4fe6.png?resizew=193)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f8759991daa986ef2e729fb6170ccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276dc08e3db48b8f2bb49b858831c6f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
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【推荐2】如图所示,平面四边形
中,
为直角,
为等边三角形,现把
沿着
折起,使得平面
与平面
垂直,且点M为
的中点.
![](https://img.xkw.com/dksih/QBM/2020/6/8/2480252730925056/2480489102745600/STEM/da030de9b1ca4776b94d37f7aef92f9a.png?resizew=151)
(1)求证:平面
平面
;
(2)若
,求直线
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/283b0cef5d644b8dceb910ce2c76f21c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59bafaec1cbb31d644a0df6bbd4fe4f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745e0525a41fe2e2a7739c75a942290b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2020/6/8/2480252730925056/2480489102745600/STEM/9961fdd8ad404ab2a21164e8453f4479.png?resizew=201)
![](https://img.xkw.com/dksih/QBM/2020/6/8/2480252730925056/2480489102745600/STEM/da030de9b1ca4776b94d37f7aef92f9a.png?resizew=151)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c52b9478a450d15ff31eb1212a39ee6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5760c43527681c5b9a671648a608098b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c5757f787d98f9a46777324b69ad672.png)
您最近一年使用:0次
解答题-证明题
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适中
(0.65)
【推荐3】如图,已知三棱锥
中,
,
,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/2b13a637-8c6a-4f06-b700-4b2fe9d5ba78.png?resizew=320)
(1)求证
;
(2)若
,求直线
与平面
所成的角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eaf10b924a42867329185ad83c85cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/2b13a637-8c6a-4f06-b700-4b2fe9d5ba78.png?resizew=320)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545e18836bc7fee22f8f813a6f525d93.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bec03e804f0cea1db5cde2aa185056a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
解答题-证明题
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适中
(0.65)
解题方法
【推荐1】如图,在四棱锥
中,底面
是
且边长为
的菱形,侧面
为正三角形,且其所在平面垂直于底面
.
;
(2)若
为
边的中点,则能否在棱上找到一点
,使平面
平面
?并证明你的结论.
![](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/c6e0b64d25ddd18454f88e40c45d7d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdfa54114f04a75b8c96165b3718ed7f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f6dd051db98c531f9ef18cdfd793f4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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解答题-问答题
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适中
(0.65)
解题方法
【推荐2】如图,在四棱锥
中,底面
为矩形,
平面
,
,点E,F分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/2021/10/27/2838581317296128/2840556771057664/STEM/bb15915ee628412b9b2b8ba8db0858f6.png?resizew=204)
(1)证明:
平面
.
(2)若
,求三棱锥
的体积.
![](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/f95475bfc06e884754eb4a455c3f434e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a109c829d652632a88ade6924fcda206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://img.xkw.com/dksih/QBM/2021/10/27/2838581317296128/2840556771057664/STEM/bb15915ee628412b9b2b8ba8db0858f6.png?resizew=204)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b4e753ef119608188c46a50ec597e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585288e61871608f6ff8f7e4a0beafbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b115316e0fcd2ef46a4dd383472996e4.png)
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解题方法
【推荐3】在正方体
中,
为
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/a18cf3e1-0553-4768-8bdb-684b0b8e9287.png?resizew=178)
(1)求证:
平面
;
(2)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/a18cf3e1-0553-4768-8bdb-684b0b8e9287.png?resizew=178)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5830646a912c3a916beac4f88c116b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2331bccb6ebf5b9fd639df994f575a9.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4890e58791814622b87c4d60ea971f54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679748eab882a6be0fefd2cc300349a4.png)
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