Question

Two boats leave the same port at the same time. One travels at a speed of 31 mi/h in the direction N 50° E and the other travels at a speed of 20 mi/h in a direction S 70° E (see the figure). How far apart are the two boats after one hour? (Round your answer to the nearest mile.)

Answer 1

convert to rectangular form and subtract one from the other.

convert back to polar to get the distance.

Answer 2

Solving