Question

Fire towers A and B are located 10 miles apart. They use the direction of the other tower as
0°. Rangers at fire tower A spots a fire at 42°, and rangers at fire tower B spot the same fire
at 64°. How far from tower A is the fire to the nearest tenth of a mile?

With solution please!! :'(
see
http://www.jiskha.com/display.cgi?id=1330160622

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