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(2007•青海)如图,为了测量河的宽度,王芳同学在河岸边相距200m的M和N两...
(2007•青海)如图,为了测量河的宽度,王芳同学在河岸边相距200m的M和N两点分别测定对岸一棵树P的位置,P在M的正北方向,在N的北偏西30°的方向,则河的宽度是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146491062/SYS201310191104461464910019_ST/images0.png)
A.200
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146491062/SYS201310191104461464910019_ST/0.png)
m
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146491062/SYS201310191104461464910019_ST/1.png)
m
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110446146491062/SYS201310191104461464910019_ST/2.png)
m
D.100m
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