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michelle, a forestry officer on watch from a lookout 35 m above the ground, notices a small brush fire at an angle of depression of 16 degree. How far, in metres, would a fiire-fighting aircraft, currently derictly over the lookout, need to fly to drop its load on the fire?

Guest May 24, 2015

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 #2
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+10

zacismyname  May 24, 2015
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 #1
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+5

We have.......

 

tan 16 = 35 / d     where d is the distance from the lookout to the fire    .....re-arrange

 

d = 35 / tan 16 =  about 122.06 m

 

 

CPhill  May 24, 2015
 #2
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+10
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zacismyname  May 24, 2015
 #3
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Nice pic and explanation, zacismyname.....!!!!

 

 

CPhill  May 24, 2015
 #4
avatar+981 
0

Thanks :)

zacismyname  May 24, 2015

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