A plane flies 810 miles from A to B with a bearing of N 75° E.
Then it flies 648 miles from B to C with a bearing of N 32° E.
Find the straight-line distance and bearing from C to ACode:Q o C : * :32°* : * : * P 105° |* : o B : * : : * 75° : : 75° * : : * R A o
The plane flies from to
Then it flies from to
Draw line segment
We have .
Law of Cosines: .