直三棱柱
中,底面
为等腰直角三角形,
,
,
,
是侧棱
上一点,设
.
(1) 若
,求
的值;
(2) 若
,求直线
与平面
所成的角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede6a60cad0e0b58e1549fda6e085719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee730f6a2551fb1b582ecf290cfea233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d0236d9dea89acb35d88f0857b38dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2555ddf0e1c249150fd1873e75d1420.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b094e639c2b31dc54b1b3e6456e77843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ba8bc8c1a4bd4c438b19c4b5fe9c27.png)
(1) 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e64fefec59e070de16ad5285c6252df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
(2) 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e61aab07bb9f382df74d247d4dc9f848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a902cbbddd9787871e4fe0b266ab1703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b78cf735fdb2765056706c0d61fca07.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/13/d2baf1bc-ce8c-4c1d-a7a3-90d9c2bdd3c4.png?resizew=170)
16-17高三下·上海松江·期中 查看更多[13]
2017届上海市松江区高三4月期中教学质量监控(二模)数学试卷上海市闵行区2017届高三4月质量调研考试(二模)数学试题2017届上海市松江区高考二模数学试题2020届上海市浦东新区高三三模数学试题上海市建平中学2020届高三下学期6月月考数学试题上海市上海交通大学附属中学2020-2021学年高二上学期期末数学试题上海市浦东新区建平中学2021届高三6月份数学模拟试题沪教版(2020) 必修第三册 达标检测 第11章 本章测试沪教版(2020) 选修第一册 单元训练 第3章 单元测试(已下线)专题15 立体几何(模拟练)-2上海市大同中学2023届高三下学期5月月考数学试题(已下线)第3章 空间向量及其应用【单元提升卷】-【满分全攻略】2022-2023学年高二数学下学期核心考点+重难点讲练与测试(沪教版2020选修一+选修二)新疆乌鲁木齐市第二十三中学2024届高三下学期2月月考数学试题
更新时间:2017-04-20 20:36:50
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐1】在正三棱柱
中,AB=2,AA1=
,点M为BB1的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/dce0441b-d310-43d7-a093-4847762e90cb.png?resizew=127)
(1)求AB与平面MAC所成角的正弦值;
(2)证明:平面MA1C1⊥平面MAC.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/dce0441b-d310-43d7-a093-4847762e90cb.png?resizew=127)
(1)求AB与平面MAC所成角的正弦值;
(2)证明:平面MA1C1⊥平面MAC.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
解题方法
【推荐2】已知几何体
,如图所示,其中四边形
、四边形
、四边形
均为正方形,且边长均为
,点
在棱
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/098fbaed-b0ed-4bae-a1c6-5e991b359a0f.png?resizew=149)
(1)求证:
.
(2)是否存在点
,使得直线
与平面
所成的角为
?若存在,确定点
的位置;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/806625a93511075586360d7f9f335f7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce463fb3ce4b3d49d470f66471fe4c15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50cfd99a702ee24f9ef94e4b6f50101f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/098fbaed-b0ed-4bae-a1c6-5e991b359a0f.png?resizew=149)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262ba9641d1dada44105a5cf7230b8d.png)
(2)是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知四棱锥
的底面为等腰梯形,
, 垂足为
是四棱锥的高,
为
中点,设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef304e31026a56d2354add1a4d5664f.png)
(1)证明:
;
(2)若
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8bdb6347c81ac58cc3db2858fcf721f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c5ef25bc6c1e38ef8f60e17557f2f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef304e31026a56d2354add1a4d5664f.png)
![](https://img.xkw.com/dksih/QBM/2018/7/10/1985518780948480/1986307460620288/STEM/785549c5bed74a93be949e8a7b864832.png?resizew=132)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2ef99db257cc1acb08e3a5e0006d49.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c5a913b96a32b950a250454cc6b34a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b48bc4a50ae1d1b40d39ecc3298a0f.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】在三棱锥P-ABC中,若已知
,
,点P在底面ABC的射影为点H,则
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/30/d5183258-979d-4014-ac7c-3a0c5e3e480e.png?resizew=175)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1e4b16c2c6c9bd089da78122e9d2511.png)
(2)设
,则在线段PC上是否存在一点M,使得
与平面
所成角的余弦值为
,若存在,设
,求出
的值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a15a004f7d47ed595f063e60075223a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbd1316b9d1f0c1e71fd078deec61f6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/30/d5183258-979d-4014-ac7c-3a0c5e3e480e.png?resizew=175)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1e4b16c2c6c9bd089da78122e9d2511.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b327984eccb07e5edce858d75f4f392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f095541d8ac2d972743d3200f22e30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次