a plane takes off to fly to a destination that is due east, 130 km away. Unfortunately, although flying in a straight line, instead of flying due east it flies east, northeast 10 degrees off course. When due north of its destination, how many kilometers has the plane flown since takeoff? Please help, I know the answer is 128 km. I just don;t know how to get that. :(

Question

anonymous · Answer

Okay, thanks. :)

anonymous · Answer

There is no drawing here, I am not sure with the drawing. Isn't that represents 10 degrees northwest though?