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+//Find resultant
+Rx=60-100*cosd(60)-120*cosd(30)  //kN  (towards left)
+Ry=-80+100*sind(60)-120*sind(30)  //kN  (downwards)
+R=sqrt(Rx^2+Ry^2)  //kN
+alpha=atand(Ry/Rx)  //degree  (shown in fig. 3.13(b))
+MA=(80*100*cosd(60)+60*100*sind(60)+120*100*sind(30))  //kN-mm
+//intercept on x-axis is
+x=MA/Ry  //mm  (as shown in fig. 3.13(a))
+printf("R=%.0f kN is the resultant as shown in fig. 3.13 (a)",R)
+
+