A man is watching from the top of a tower a boat speeding away from the tower. The boat makes an angle of depression of 45 with the man s eye when at a distance of 60 meter from the tower. After 5 second, the angle of depression becomes 30 . What is the approximate speed of the boat, assuming it is running in still water?

A man is watching from the top of a tower a boat speeding away from th

1.	A man is watching from the top of a tower a boat speeding away from the tower. The boat makes an angle of depression of 45 with the man s eye when at a distance of 60 meter from the tower. After 5 second, the angle of depression becomes 30 . What is the approximate speed of the boat, assuming it is running in still water?
A.	32 Km/h
B.	42 Km/h
C.	38 Km/h
D.	36 Km/h
E.	40 Km/h
Answer» B. 42 Km/h

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