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1 . 直三棱柱
的底面
是等腰直角三角形,
,
.若以点C为球心,
为半径的球与侧面
的交线长为
,且所对的弦长为r,则球C与三棱柱
的交线长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/044a9cab96df01ffe6f14d57ca5273d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b339d4e85a47668d10445598cdeb9e57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f9bef99d47df65de2ce222c7f793cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce1a4da0a4d53a3d5b79fe61f4f87f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
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解题方法
2 . 如图,在扇形OPQ中,半径
,圆心角
,C是扇形弧PQ上的动点,矩形
内接于扇形,记
.则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9934cf2feb65b00392ba39d8242e47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98cdc1204d3b8b3f5bea86ee5dd41744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f891d3293f4d016dc384b5ff6ebcb87.png)
A.弧PQ的长为![]() |
B.扇形OPQ的面积为![]() |
C.当![]() ![]() ![]() |
D.矩形![]() ![]() |
您最近一年使用:0次
2023-03-24更新
|
1458次组卷
|
6卷引用:吉林省吉林市2022-2023学年高一上学期期末数学试题