Hello, gofish!

I think it's easier with the Law of Cosines.

1) Starting at point A, a ship sails 18.5 km on a bearing of 189°,

then turns and sails 47.8 km on a bearing of 317°.

Find the distance of the ship from point A.Code:N C * M : \ * : : \ * : : \ : * : \ : * A 47.8 \ : /: \43°: / : \ :9°/9°: \ : / : \:/ : * : B S

The ship sails from to

Hence, major angle

Then it sails from

Major angle

. . Hence: .

Law of Cosines: .

Therefore: . km.