43. Vector A is 2.80 cm long and is 60° above the x-axis in the first quadrant. Vector B is 1.90 cm long and is 60° below the x-axis in the fourth quadrant (Fig. 1.35). Use components to find the magnitude and direction of (a) A+B (b) A-B (c) B-A.

 43. Vector A is 2.80 cm long and is 60° above the x-axis in the first quadrant. Vector B is 1.90 cm long and is 60° below the x-axis in the fourth quadrant (Fig. 1.35). Use components to find the magnitude and direction of (a) A+B (b) A-B (c) B-A. In each case, sketch the vector addition or subtraction and show that your numerical answers are in qualitative agreement with your sketch.