This is an allication of the cosine rule. You have a triangle with twoOriginally Posted by cinbad
sides one 300 and the other 200 miles, and the angle between them
is 40 degrees.
Substitute , and into the above and that's it
Two airplanes leave an airport at the same time, and the angle between their flight paths is 40*.An hour later, one plane has traveled 300 miles, while the other has travelled 200 miles,each in a straight line. How far apart are the planes at this time?