## College Physics (7th Edition)

a). $(4) 129^{\circ}$ is correct. b). $14408\,\,kms$
a). Both places are at the same latitude. Only longitudes are different. Hence, the smallest angular distance the fan has to travel $=151^{\circ}-22^{\circ}=129^{\circ}$. (4) is correct. b). $S=r\theta=6400 km \times \frac{129}{57.3}=14408kms.$