Question

After 3 days of hiking, a group of hikers are 30km north from their starting position. On the first day, they hiked 20km east; on the second day, they hiked 30km 53°N of W. Calculate their displacement on the third day.

Answer 1

$=10\sqrt{22-6(3sin53^{\circ}+2cos53^{\circ})}≈6.35$ km.

Answer: 6.35 km.