Asked by Aichi
A lighthose beacon is 140 meters above sea level,The waters around it bound in rocks as far as 100 meters from the base of the lighthouse.An observer on the deck of a ship 7 meters above sea level finds that the angle of elevation of the beacon is 30°,How many meters is the ship clear of the rocks?
Answers
Answered by
Anonymous
tan 30= 140 / d
so
d = 140 / tan 30 = 140 / 0.577 = 243 meters total away from house
so
243 - 100 = 143 meters
so
d = 140 / tan 30 = 140 / 0.577 = 243 meters total away from house
so
243 - 100 = 143 meters
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