Suppose you first walk 12.0 m in a direction 20 west of north and then 20.0 m

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Suppose you first walk 12.0 m in a direction 20° west of north and then 20.0 m in a direction 40.0° south of west. How far are you from your starting point, and what is the compass direction of a line connecting your starting point to your final position? (If you represent the two legs of the walk as vector displacements A and B, as in Figure 3.51, then this problem finds their sum R = A + B.)

A + B = R B = 20 m 40 B  . A R A 12 m YA FIGURE 3.51 W N to -20 X E

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