posted by mimi on .
a plane flies 810 miles form Franklin to Centerville with a bearing of 75 degrees (clockwise from north). then it flies 648 miles from centerville to rosemont with a bearing of 32 degrees. find the straight-line distance and bearing from rosemont to franklin.
Compute the north and east displacements of both legs of the journey.
Add the two north displacements. Call that sum Y
Y = 810 cos75 + 648 cos32 = __
Add the two east displacements. Call that sum X.
X = 810 sin75 + 648 sin32 = ___
Straight-line distance = sqrt[X^2 + Y^2]