1 . 某公园准备在一圆形水池里设置两个观景喷泉,观景喷泉的示意图如图所示,
两点为喷泉,圆心
为
的中点,其中
米,半径
米,市民可位于水池边缘任意一点
处观赏.
(1)若当
时,
,求此时
的值;
(2)设
,且
.
(i)试将
表示为
的函数,并求出
的取值范围;
(ii)若同时要求市民在水池边缘任意一点
处观赏喷泉时,观赏角度
的最大值不小于
,试求
两处喷泉间距离的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/973f6cdda7e3016262e1afe5e1243554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a03c24198801bb06e249c50d7a5155.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e366bbf3ccb5d6edda025b93a1d853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a25f7025b6c9e995f72ac6d52a20456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba80dd53f3e9e46069d9bf7f3d37971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d6bf0012fae023929beb9832b0e635.png)
(i)试将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(ii)若同时要求市民在水池边缘任意一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/e2b1e6b2-b869-49d8-87f2-b9ea14786353.png?resizew=159)
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2018-11-03更新
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6卷引用:2016届江苏省淮安市高三5月信息卷(最后一模)考试数学试卷