如图,一艘执法船以40km/h的速度向正东航行,在A处测得灯塔C在北偏东
方向上,继续航行30min到达B处,这时测得灯塔C在北偏东
方向上,已知在灯塔C的四周20km内有暗礁,问这艘执法船继续向东航行是否有触礁的危险?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/9/7c05666a-c74b-45fb-b1e1-d831cdd23c9b.png?resizew=214)
更新时间:2023-09-08 15:21:34
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解答题-作图题
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名校
【推荐2】已知:如图,
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(2)若
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(2)若
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【推荐1】交通安全是社会关注的热点问题,安全隐患主要是超速和超载.某中学八年级数学活动小组的同学进行了测试汽车速度的实验.如图, 先在笔直的公路
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【推荐1】如图一艘轮船位于灯塔B的正西方向上的A处,且灯塔B到A处的距离为40海里,轮船沿东北方向匀速航行,速度为20海里/时.
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解答题-计算题
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【推荐2】一轮船从海岛
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