Question

A launch travels across a river from a point a to a point b of the opposite bank along the line ab forming angle with the bank. The flag on the mast of the launch makes an angle with its direction of motion. Determine the speed of the launch w.R.T. The bank. The velocity of wind is u perpendicular to the stream.

Answer 1

Answer:

4

Explanation:

A launch travels across a river from a point a to a point b of the opposite bank along the line ab forming angle with the bank. The flag on the mast of the launch makes an angle with its direction of motion. Determine the speed of the launch w.R.T. The bank. The velocity of wind is u perpendicular to the stream.