Question
Quantitative Ability and Data Interpretation Question on Trigonometry
Peter was standing on the top of a rock cliff facing the sea. He saw a boat coming towards the shore. As he kept seeing time just flew. Ten minutes less than half of an hour, the angle of depression changed from 30 to 60. How much more time in minutes will the boat take to reach the shore ?
A
5
B
10
C
15
D
20
Answer
10
Explanation
Solution
The correct option is (B): 10.