A boy standing on the top of a hotel, which is on the sea- shore, finds that a boat coming - Maths - Some Applications of Trigonometry

Question

A boy standing on the top of a hotel, which is on the sea- shore,
finds that a boat coming towards him takes 10 minutes for the angle
of depression to change from 30 degree to 60 degree How soon will
the boat reach the sea-shore?

Rahul K · Accepted Answer

A boy standing on the top of a hotel, which is on the sea- shore, finds that a boat coming towards him takes 10 minutes for the angle of depression to change from 30 degree to 60 degree. How soon will the boat reach the sea-shore?