What do you mean by "use cosine"?
Radar stations and are on an east-west line, 8.6 km apart.
Station detects a plane at , on a bearing of 53°.
Station simultaneously detects the same plane, on a bearing of 323°.
Find the distance from to
Why can I not use cosine to find the length?Code:C * : * * : : * *37°: : * * : : 53° * * : : * 37° 53° *: * - - - - - - - - - - - * A 8.6 B
If you mean "the Law of Cosines", we can't.
. . The Law of Cosines requires two sides ... and we have only one.
If you note that , you can use cosine.