国上活大峰 0 B (a) Figure Graphical solution of case 2:(a)given C.A.and B. Figure Graphical solution of case 3 (a)given C.A'.and B': c的solution for A,B°andA'.B". 句solution for A and B. √√o√√o C=A+B 6=A+B 圈上清庆大坐 Vector rotation: R=Reio R R'=Reio=Rei(0+o) RFigure Graphical solution of case 2: (a) given C, Aˆ , and B; (b) solution for A, Bˆ and A’, Bˆ’. CAB   √ √ O √ √ O √ √ O √ O √ Figure Graphical solution of case 3: (a) given C, Aˆ, and Bˆ; (b) solution for A and B. CAB   Vector rotation: j R e  R  ( ) 'e j j R e    R R  X Y O R  R ' 