Leaving the outpost, Alejandro went on a three-day journey into the desert. His displacement (distance and direction) from start to finish on day one was d = 3 + 7h. His displacement from start to finish on day
two was da = -1 + 8h. His displacement on day three, dz, took him back to the outpost.
(Distances above are given in kilometers, km.)
What distance did Alejandro travel on day three?
km
(Round to the nearest tenth.)
In what direction did Alejandro travel on day three? Assume 0° is the rightward direction.
(Round to the nearest degree. Your answer should be between 0 and 360°.)