名校
解题方法
1 . 某沿海地区的海岸线为一段圆弧
,对应的圆心角
,该地区为打击走私,在海岸线外侧
海里内的海域
对不明船只进行识别查证(如图:其中海域与陆地近似看作在同一平面内),在圆弧的两端点
、
分别建有监测站,
与
之间的直线距离为
海里.
![](https://img.xkw.com/dksih/QBM/2020/2/18/2401669610307584/2401920776536064/STEM/9c394e4da71b4b338e6c234b7701e825.png?resizew=208)
(1)求海域
的面积;
(2)现海上
点处有一艘不明船只,在
点测得其距
点
海里,在
点测得其距
点
海里.判断这艘不明船只是否进入了海域
?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d162c29b1e484cfc87350dd68f00b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://img.xkw.com/dksih/QBM/2020/2/18/2401669610307584/2401920776536064/STEM/9c394e4da71b4b338e6c234b7701e825.png?resizew=208)
(1)求海域
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)现海上
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe12c9e1cebb9950cb528c875b560a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
名校
2 . 若点P(1,-1)在圆C:x2+y2-x+y+m=0的外部,则实数m的取值范围是( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-05-05更新
|
841次组卷
|
5卷引用:新疆石河子第二中学2018-2019学年高一下学期第一次月考数学试题
10-11高一·安徽安庆·阶段练习
3 . 过点
的直线l将圆
分成两段弧,当劣弧所对的圆心角最小时,求直线l的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38620d68461307e424923b903ab518f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bac4d3d2be66e9f25b59e3a94f235e5.png)
您最近一年使用:0次