名校
1 . 在侧棱长为
的正三棱锥
中,点
为线段
上一点,且
,点M为平面
内的动点,且满足
,记直线
与直线
的所成角的余弦值的取值范围为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](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/f8aca29eb6c46838852134027cf28d99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01ba3f329b712e87ead41125cacd34a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
名校
2 . 四棱锥
的底面
为正方形,
平面
,且
,
.四棱锥
的各个顶点均在球O的表面上,
,
,则直线l与平面
所成夹角的范围为________ .
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/364d6c88726d8c3bb8ed297057332bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36671a5652834ef8b3984fa76643ce5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8adb2e669e789bb6eb154f7d1defb7bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
2024-05-27更新
|
460次组卷
|
3卷引用:浙江省东阳市2024届高三5月模拟考试数学试题
解题方法
3 . 如图,几何体是以正方形ABCD的一边BC所在直线为旋转轴,其余三边旋转90°形成的面所围成的几何体,点G是圆弧
的中点,点H是圆弧
上的动点,
,给出下列四个结论:
①不存在点H,使得平面
平面CEG;
②存在点H,使得
平面CEG;
③不存在点H,使得点H到平面CEG的距离大于
;
④存在点H,使得直线DH与平而CEG所成角的正弦值为
.
其中所有正确结论的序号是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdb53e0fdf3ebeb96e4f69feacbd80e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f986c181183d8e7e45655e6c5b5d5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
①不存在点H,使得平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac315b586b67bb46ad7ec0542984611.png)
②存在点H,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8feff4cac57f90fcca8c7e41e4fbaa7d.png)
③不存在点H,使得点H到平面CEG的距离大于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f83dbfddc6f98548699ed581e8c8608.png)
④存在点H,使得直线DH与平而CEG所成角的正弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d74ef32584586ec4857acd0a3f4fe9.png)
其中所有正确结论的序号是
您最近一年使用:0次
解题方法
4 . 在棱长为
的正四面体
中,点
为平面
内的动点,且满足
,则直线
与直线
的所成角的余弦值的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d124d4438fb79851ca01640f57ddc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
解题方法
5 . 如图,在棱长为1的正方体
中,点P是对角线
上的动点(点P与点A,
不重合).给出下列结论:
平面
;
②对任意点P,都有
;
③
面积的最小值为
;
④若
是平面
与平面
的夹角,
是平面
与平面
的夹角,则对任意点P,都有
.其中所有正确结论的序号是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/339128336cb6905dc8537e58f55ad3f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15e58659e6ee4d93650e2edb6d6f7ff.png)
②对任意点P,都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e49f40551cef68103af5d7d752c6878.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dd5683dba7d9f29d643e9a3e3204fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a8b76e36783a69d14ec54af82c7df0.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f64fa38725c136504f723019a18dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6e96872af0f0b341835576c407e364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93fa313adc4ac7608ba9449fd755212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6e96872af0f0b341835576c407e364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e00753ad7f0f49c325c387e5104f3f02.png)
您最近一年使用:0次
2024-04-10更新
|
706次组卷
|
3卷引用:2024届北京市房山区高三一模数学试卷
名校
解题方法
6 . 在长方体
中,
,线段
有一动点
,过
作平行于
的平面交
与点
.当直线
与平面
所成角最大时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af5b8a7b06dc4dc4a858cdfaa340fbc.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/245c24bc367dadfa17a54f98b6552af0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/233015062824e26bf4b6a755c428dcae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af5b8a7b06dc4dc4a858cdfaa340fbc.png)
您最近一年使用:0次
名校
7 . 如图,棱长为的正方体中,
为线段
上的动点(不含端点),以下正确的是
①;
②存在点,使得
//面
;
③的最小值为
;
④存在点,使得
与面
所成线面角的余弦值为
.
您最近一年使用:0次
解题方法
8 . 在正方体
中,
为线段
的中点,点
在线段
上,则直线
与平面
所成角的正弦值的范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9539f8fb13345b449274b67bbda995db.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/887c49fa-6f23-4808-a250-9f5fd462e828.png?resizew=172)
您最近一年使用:0次
2024高三·全国·专题练习
解题方法
9 . 如图,已知正方体
的棱长为4,E为棱
的中点,点
在侧面
上运动,当平面
与平面
、平面
所成的角相等时,
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c52091eb745de866044477641a7c55f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68082bc72b198219560676ec9dcb1c31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c52091eb745de866044477641a7c55f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c798204bbe306b3efd5bc9eae594c171.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/23/83669586-79b7-4ec9-934d-59ed859e3e34.png?resizew=175)
您最近一年使用:0次
名校
解题方法
10 . 如图,已知点
是圆台
的上底面圆
上的动点,
在下底面圆
上,
,则直线
与平面
所成角的余弦值的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae0a4f38420bb9215dbc9c875b755838.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ab8154b6336457e744a7e6b4bd5e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c643d1581b072f4b61a2211828eb0569.png)
您最近一年使用:0次
2024-03-21更新
|
1421次组卷
|
5卷引用:河北省沧州市泊头市联考2024届高三下学期高考模拟考试数学试题
河北省沧州市泊头市联考2024届高三下学期高考模拟考试数学试题河北省张家口市2024届高三一模数学试题(已下线)压轴小题8 四棱锥中的线面角问题(已下线)第七章 应用空间向量解立体几何问题拓展 专题一 立体几何非常规建系问题 微点3 立体几何非常规建系问题(三)【培优版】(已下线)【练】专题7 解三角形与其它知识的交汇问题