A = 352, θA = 174° and B = 276, θB = 358 horizontal components | Vertical components ------------------------|------------------------ 352cos(174°)= -350.0717 | 352sin(174°)= 36.7940 ------------------------|------------------------ 276cos(358°)= 275.8319 | 276sin(358°)= -9.6323 ------------------------|------------------------ Totals: -74.2398 | 27.1617 tan(θR) = 27.1617/-74.2398 tan(θR) = -0.36586 θR = 159.9042° since θR is in quadrant II R =R = 79.0526 Edwin