1. The problem statement, all variables and given/known data Three vectors a , b , and c each have a magnitude of 42 m and lie in an xy plane. Their directions relative to the positive direction of the x axis are 29°, 197°, and 314°, respectively. What are (a) the magnitude and (b) the angle of the vector a+ b + c, and (c) the magnitude and (d) the angle of a - b + c? What are (e) the magnitude and (f) the angle of a fourth vector d such that (a + b) - ( c+d ) = 0? 2. Relevant equations 3. The attempt at a solution I do not how to approach this problem. Could someone please give me a few steps to try. Would be greatly appreciated!