How to calculate the distance between the first and third islands? (Physics)

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I used B = -9.616 + 2.01(8.51) and got 7.4891 km , but it was incorrect.

1 Answer
Feb 5, 2018

b=6.973835b=6.973835 KmKm

Explanation:

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Law of sines:

sin42.5/5.65=sin56.5/(AC)sin42.55.65=sin56.5AC

AC=(5.65sin56.5)/sin42.5=6.973835AC=5.65sin56.5sin42.5=6.973835 KmKm