1. The problem statement, all variables and given/known data A sailboat is heading due east at 8 mph. The wind appears to blow from the south west (toward the north east – that is 45 degrees north of east) as observed from the sailboat. What is the speed and direction of the wind as observed from the ground? 2. Relevant equations 3. The attempt at a solution I drew a vector due east with magnitude 8. From the head of the vector I drew another vector at a 45 degree angle. Before I can solve the triangle, don't I need to know the magnitude of the wind?