名校
解题方法
1 . 某车间生产一种圆台形零件,其下底面的直径为4,上底面的直径为8,已知
为上底面的直径,点P是上底面圆周上一点,且
,
是该圆台的一条母线,且
,则
与平面
所成的角的正弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a606499df4459e5fbd6021c61a805359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6914d401b0e7099dbea8ebdd5052ee7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
2 . 如图所示,圆锥的轴截面
是以
为直角顶点的等腰直角三角形,
,
为
中点.若底面
所在平面上有一个动点
,且始终保持
,过点
作
的垂线,垂足为
.当点
运动时,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/091a2b5e-b4d4-4ebc-98f6-a796eb74fba6.png?resizew=172)
①点
在空间形成的轨迹为圆
②三棱锥
的体积最大值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d7abf02717d6e59d8a64a65a87c412.png)
③
的最大值为2
④
与平面
所成角的正切值的最大值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
上述结论中正确的序号为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76491e815433aee93310af8066f45e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/091a2b5e-b4d4-4ebc-98f6-a796eb74fba6.png?resizew=172)
①点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
②三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0525edf8863c1dde10c5cd83916c05c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d7abf02717d6e59d8a64a65a87c412.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb717b62d5d4128157417ecb62f7f7e.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
上述结论中正确的序号为( ).
A.①② | B.②③ | C.①③④ | D.①②③ |
您最近一年使用:0次
2021-06-03更新
|
1823次组卷
|
6卷引用:河南省济源市第一中学2022-2023学年高二下学期开学实验班数学试题
河南省济源市第一中学2022-2023学年高二下学期开学实验班数学试题安徽师范大学附属中学2021届高三下学期5月最后一卷理科数学试题(已下线)热点08 立体几何-2022年高考数学【热点·重点·难点】专练(新高考专用)(已下线)专题23 立体几何中的压轴小题-1辽宁省本溪市高级中学2023-2024学年高三上学期高考适应性测试(一)数学试题(已下线)第二章 立体几何中的计算 专题一 空间角 微点4 直线与平面所成角(二)【基础版】
解题方法
3 . 将六根长为2米的硬钢丝与三根长为3米的硬钢丝焊接成一个三棱柱,假设钢丝是极细的(计算体积时可将每根钢丝当作线段),焊接过程中钢丝长度不改变.若所得三棱柱的体积为
立方米,则该三棱柱的侧棱与底面所成角的正弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 在正四面体
中,异面直线
与
所成的角为
,直线
与平面
所成的角为
,二面角
的平面角为
,则
,
,
的大小关系为( )
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/442af36f0d841dc892f0750462b8a6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-01-03更新
|
1562次组卷
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7卷引用:河南省实验中学2023-2024学年高三上学期开学考试数学(文)试题