1. The problem statement, all variables and given/known data An airplane has a speed of 280 km/h with respect to the air. There is a wind blowing at 100 km/h at 30° north of east with respect to Earth. In which direction should the plane head in order to land at an airport due north of its present location? 2. Relevant equations Q1: ???° west of north Q2: What would be the plane's speed with respect to the ground? 3. The attempt at a solution I appreciate the help, very much.