Question

From the top of a light house, the angle of depression of a boat is 15°. If the light house is 60 m high and its base is at sea level, the distance of the boat from the light house is
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Answer 1

Answer:

Height of light house =60 m

Angle of depression = 30

∘

Let the distance of boat from the light house = s

Then, angle of depression = angle of elevation

tan∠ of elevation =

distance

height

tan30=

s

60

s=60

3

m