Question

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 $45\degree$with the man's eye when at a distance of 60 meters from the tower. After 5 seconds, the angle of depression become $30\degree$. 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

Answer 1

Answer: (A)

32 kmph

Answer 2

The correct option is (A): 32kmph