calculus
posted by Anonymous .
A pilot wishes to reach an airport 350 Km due east from his present position. The wind is blowing from N25degreesE with a speed of 80Km/h and the planes airspeed is 400 km/h. What ground speed and what heading should the pilot steer to reach the airport? How many minutes will of take the plane to reach the airport?

This is not calculus, it is vector math. Work it as a Algebra II vector problem, breaking it into components. Most in the real world of navigation would do this graphically.