1. The problem statement, all variables and given/known data A plane is heading due south and climbing at the rate of 60 km/hr. If its airspeed is 540 km/hr and there is a wind blowing 110 km/hr to the northwest, what is the ground speed of the plane? 2. Relevant equations Pythagorean theorem 3. The attempt at a solution √(540^2+110^2). I tried adding different vectors using this method, but none of the results are correct.