Towers A and B are located 10 miles apart. A ranger spots a fire at a 42-degree angle from Tower A. Another fire ranger spots the same fire at a 64-degree angle from Tower B. To the nearest tenth of a mile, how far from Tower B is the fire?
a) 7.0 mi
b) 7.4 mi
c) 9.4 mi
d) 13.4 mi