1.39 .. (a) Write each vector in Fig. E1.39 in terms of the unit vectors î and ſ. (b) Use unit vec- tors to express vector C, where C = 3.00 A – 4.00 B. (c) Find the magnitude and direction of C.

1.37 .. Write each vector in Fig. E1.24 in terms of the unit vec- tors î and ſ.