In an attempt to escape his island, gilligan builds a raft and sets to sea. the wind shifts a great deal during the day, and he is blown along the following straight lines 2.5 km 45° north of west; then 4.70 km 60° south of east; then 5.1 km straight east; then 7.2 km 55 south of west; and finally 2.8 km 5 north of east. what is his final position in kilometers and degrees south of east relative to the island?

8.28 km

Explanation:  

Given

First it drifts 2.5 km

Secondly it drifts 4.70 km

After that it drifted along east direction 5.1 km

After that it drifts 7.2 km

After that it drifts 2.8 km

=+

for direction

south of east

sonar - device which is used to find the submit submarines, sankalp ship. sonar waves consists of a transmitter and detector which are installed in the observation centre on board of a ship. the ultrasonic waves are sent into the sea at high frequency about 1000 khz in all direction.

i think its