A man in a boat rowing away from a light house 150m high, takes 15 minutes
to change the angle of elevation of the top of the light house from 600
to 450
.
Find the distance between two positions of the boat.
Answers
Answered by
4
Answer:
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)
Similar questions