SOLUTION: the post office building in manilais 21.8 meters away from the southern bank of the pasig river. from a window of the building 18.5 meters above the ground, a man finds that the an
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Question 884680: the post office building in manilais 21.8 meters away from the southern bank of the pasig river. from a window of the building 18.5 meters above the ground, a man finds that the angle of depression of the northern bank is 8 degrees and 12 minutes. what is the width of the river at this point? Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! he post office building in manilais 21.8 meters away from the southern bank of the pasig river. from a window of the building 18.5 meters above the ground, a man finds that the angle of depression of the northern bank is 8 degrees and 12 minutes. what is the width of the river at this point?
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let x=width of river
8 deg and 12 min=8.2˚
tan(90-8.2)=(21.8+x)/18.5
21.8+x=18.5*tan(81.8˚)=128.38
x=106.58
width of river=106.58 m
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