A man on the top of a tower, standing on the sea shore, finds that a b – McqOptions

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1.	A man on the top of a tower, standing on the sea shore, finds that a boat coming towards him takes 10 minutes for the angle of depression to change from 30 to 60 . How soon the boat reach the seashore?
A.	5 minutes
B.	7 minutes
C.	10 minutes
D.	15 minutes
Answer» B. 7 minutes

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