A sailboat tacking against the wind moves as follows: 5.8 km at 45 degrees east of north, and then 4.5 km at 50 degrees west of north. The entire motion takes 1 h 15 min What is the total displacement? What is the average velocity of this section of the trip? What is the speed, if it is assumed to be constant? Total Displacement /\x = 5.8*sin(45) + 4.5*sin(-50)= 6.116 km /\y = 5.8*cos(45) + 4.5*cos(-50)= 7.389 km /\d = sqrt(/\x^2 + /\y^2) = 9.592 km = 9592 m Average Velocity v= r/t How do I figure out the rest from this information? Any help would be appreciated.