Vector A has a magnitude of 8.00 m and makes an angle of 45.00 with the positive x axis. Vector B also has a magnitude of 8.00 m and is directed...

Vector A has a magnitude of 8.00 m and makes an angle of 45.00 with the positive xaxis. Vector Balso has a magnitude of 8.00 m and is directed along the negative x axis.Using graphical methods, find a) the vector sum A B and b) the vectordifference A B .