Hi i need help with some online homework but i cant seem to get the right answer. Vector A has a magnitude of 70 units and points due west, while vector B has the same magnitude and points due south. Find the magnitude and direction of (a) A + B and (b) A - B . Specify the directions relative to due west. for part a) i got mag = 99 with angle of 45 degreees south of west and b) same thing but north of west am i doing something wrong?