I'm having a bit of trouble with this problem, I thought I knew how to solve it but can't get what is listed as the correct answer in the key. An airplane starting from airport A flies 300 km east, then 410 km at 25.5° west of north, and then 150 km north to arrive finally at airport B. The next day, a pilot flies directly from A to B in a straight line, what is the distance of this flight? I was able to find the correct angle, 77.89 degrees north of east, and I tried to use the Pythagorean theorem with the X and Y components to find the length of the resultant, but the website (it's a webassign.net problem for a class) keeps telling me I have the wrong answer. Any insights on what I'm doing wrong? The two answers I keep coming up with are 371.17 km and 333.94 km. thanks for your time!