Trigonometry

Question

Andreia and Carlos left the airport at the same time. I'm Draya flew at a hundred and ninety miles per hour on a course with a bearing of 80 degrees and Carlos flew at 230 miles per hour on a course with a bearing of 210 degrees. How far apart were they after two hours?

Answer 1

Draw and label a diagram.

The angle between the two is 140°

Use this in the Law of Cosines.

a = 460, b = 420