Question 977449
Two cyclist leave from the intersection of two roads at the same time. The angle between the two roads is 82°. In one hour, one cyclist travels 18km along one road and the other travels 14 km along the other road. how far apart, in a direct line, are the cyclist at the end of this hour ?
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Use the Cosine Law.
{{{d^2 = 18^2 + 14^2 - 2*18*14*cos(82)}}}