南海舰队某军舰以40海里/小时的速度航行,在A点测得海面上灯塔P在南偏东
,向北航行30分钟后到达B点,测得灯塔P在南偏东
,军舰改为北偏东
的航向再行驶1小时后到达点C,则P、C两点的距离为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/30/77ca05ec-adaf-4182-8320-579d1fb88468.png?resizew=130)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260200d547998bcac50a4a491382e7f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996bf3d35b6763cbc1a423b13a9df2dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260200d547998bcac50a4a491382e7f4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/30/77ca05ec-adaf-4182-8320-579d1fb88468.png?resizew=130)
A.![]() | B.![]() | C.![]() | D.![]() |
20-21高一下·四川成都·期末 查看更多[2]
更新时间:2022-07-15 21:46:06
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【推荐1】一货轮航行到M处,测得灯塔S在货轮的北偏东
,与灯塔S相距20海里,随后货轮按北偏西
的方向航行30分钟后到达N处,又测得灯塔在货轮的东北方向,则货轮的速度为( )
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【推荐2】如图,从无人机
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A.60 | B.![]() | C.30 | D.![]() |
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