A man rowing a boat away from a light house 150 m high takes 2 minutes to change the angle of elevation of the top of the light house from 450 to 300 .Find the speed of the boat
Answers
Answered by
2
The distance between light house and boat in the case of 60
∘
is given by tan60
∘
=
x
150
⟹x=50
3
The distance between light house and boat in the case of 45
∘
is given by tan45
∘
=
y
150
⟹y=150
Distance travelled =50(3−
3
)
Speed =
120
50(3−
3
)
⟹0.52m/s(approx)
How satisfied are you with the answer?
This will help us to improve better
Similar questions