如图,海上有A,B两个小岛相距
,船O将保持观望A岛和B岛所成的视角为
,现从船O上泥下一只小艇沿BO方向驶至C处进行作业,且
,设
.
和
,并求出x的取值范围;
(2)晚上小艇在C处发出一道强烈的光线照射A岛,B岛至光线CA的距离为BD,求BD的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3fb33e7fb8709bd8d5db686644d50b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663a4fa9ffb34d8a1f5f1eab07499b48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f925fd5a608a8b34ba9e9f4aa9976b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c325b9535c92eb2ece4650df93197d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba02cc9cdf0be2736607c0948a23756e.png)
(2)晚上小艇在C处发出一道强烈的光线照射A岛,B岛至光线CA的距离为BD,求BD的最大值.
更新时间:2023-04-21 17:52:52
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