A boat is being rowed away from a cliff 150m high. At the top of the cliff the angle of depression of the boat changes from 60 to 45 in 2 minutes. Find the speed of the boat.

A boat is being rowed away from a cliff 150m high. At the top of the c

1.	A boat is being rowed away from a cliff 150m high. At the top of the cliff the angle of depression of the boat changes from 60 to 45 in 2 minutes. Find the speed of the boat.
A.	1.9 km/hr
B.	2.3 km/hr
C.	3.8 km/hr
D.	4.5 km/hr
Answer» B. 2.3 km/hr

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A boat is being rowed away from a cliff 150m high. At the top of the cliff the angle of depression of the boat changes from 60 to 45 in 2 minutes. Find the speed of the boat.

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