a mountanier uses a global positioning system reciever to measure his displacement from base camp to the top of mount mckinely. in term of horizontal coordinates x and y, the base camp is at x=0,y=0, and the base of mount mckinley is at x=1600m,y=4200m. if the altitude of Mount mckinley is 6200m and the base camp is at 4119m, what is the displacement in going from base camp to the top?