The first train, let’s call this train A, covers a distance
of 100 km. dA = 100 km
The second train, train B, covers a distance of 200 km. dB =
200 km
The Law of Cosine states that:
c^2 = a^2 + b^2 – 2abcos ø
Where a = dA , b = dB, and ø = 130° angle
between them
c^2 = 100^2 + 200^2 – 2(100)(200)cos130
Using the calculator:
c^2 = 64691.65
<span>c = 254. 35 km
rounding off:</span>
<span>c =
254 km</span>
<span>Therefore the 2 trains are 254 km apart after their 1st stop.</span>