1 . 已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9bf2423499d45354dbc8377f1f04e16.png)
的二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754bbd99327195520a4ca3ce3b9a0577.png)
,点A
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f2c3f63b766d0373b7f1df007d03f3e.png)
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c638fb895acd987140d0ca6bef097499.png)
,C为垂足,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16acea101c98a280a70c2fa0b2c04dd7.png)
,BD
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a05bb4210bfcc2d44d7db89837a1149.png)
,D为垂足,若AC=BD=DC=1则AB与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
面所成角的正弦值为
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2016-12-02更新
|
1179次组卷
|
2卷引用:2013届河南省郑州市第四中学高三第十四次调考理科数学试卷(已下线)2013届河南省郑州市第四中学高三第十四次调考理科数学试卷(已下线)2013届辽宁沈阳二中等重点中学协作体高三领航高考预测(六)理数学卷
2 . 已知平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
截一球面得圆M,过圆心M且与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
成
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecdab625e32e38d1c72c901cece0e147.png)
角的平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c62c14a017007a6bdfe25eada9c433.png)
截该球面得圆N若圆M、圆N面积分别为4
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d5adfe85535b699655d5ed2f3322d8.png)
、13
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d5adfe85535b699655d5ed2f3322d8.png)
,则球面面积为
2013-05-27更新
|
547次组卷
|
2卷引用:2013届河南省郑州市第四中学高三第十四次调考理科数学试卷(已下线)2013届河南省郑州市第四中学高三第十四次调考理科数学试卷(已下线)2013届辽宁沈阳二中等重点中学协作体高三领航高考预测(六)理数学卷