1. The problem statement, all variables and given/known data Force A has a magnitude of 200lb and points 35° N of W. Force B points 40° E of N. Force C points 30° W of S. The resultant of the three forces has a magnitude of 260lb and points 85° S of W. (a) What is the magnitude of Force B? (B) What is the magnitude of Force C? 2. Relevant equations F = √(Fx2 + Fy2) Fx = FcosΘ Fy = FsinΘ where F = Force Θ =Angle 3. The attempt at a solution Having drawn these vectors, I've been trying to use components which could've been easier if 2 forces were given. Resultant's X = Rx = 260cos85° Resultant's Y = Ry = 260sin85° Force A's X = Ax = 200cos35° Force A's Y = Ay = 200sin35° Bx = Bsin40° By = Bcos40° Cx = Csin30° Cy = Ccos30° And formed equations R = A + B + C Rx = Acos35° + Bx + Cx Ry = Asin35° + By + Cy With these, I don't really know because 2 are missing while having no other equations for them like A+B=1 or stuff like that that give hints. Seems like something is missing, but i don't know because others have solved it. Don't know what is next.