Question

Two forest fire towers, A and B, are 20.3 km apart. From tower A, the bearing of tower B is 70 degrees. The ranger in each tower observes a fire and radios the bearing of the fire form the tower. The bearing from tower A is 25 degrees and from tower B is 345 degrees. How far, to the nearest tenth of a kilometre, is the fire from each tower?

I know how to use sine and cosine laws, just not how to draw it to start the question. Thanks!
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