A man is watching form the top of a tower a boat speeding away from the tower The boat makes an angle of depression of `

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Q 3010778610.     A man is watching form the top of a tower a boat speeding away from the tower The boat makes an angle of depression of ` 45^{0}` with the man's eye when at a distance of `60` meters from the tower After `5` seconds the angle of depression becomes ` 30^{0}` What is the approximate speed of the boat assuming that it is running in still water?
A

32 kmph

B

36 kmph

C

38 kmph

D

40 kmph

E

42 kmph

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Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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