Solve the Problem $B , 12.0$ Miles Due South Of $A$ , Is

Solve the problem.
-A fire is sighted due west of lookout A. The bearing of the fire from lookout $B , 12.0$ miles due south of $A$ , is $N 48 ^ { \circ } 43 ^ { \prime } \mathrm { W }$ . How far is the fire from $B$ (to the nearest tenth of a mile) ?

A) $21.2 \mathrm { mi }$
B) $19.2 \mathrm { mi }$
C) $18.2 \mathrm { mi }$
D) $20.2 \mathrm { mi }$

Correct Answer:

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