clc; //Entire truss //Applying sum(Fy)=0 Ay=480;//N, Y component of reaction at A //Applying sum(M_A)=0 B=480*100/160;//N, reaction at B //Applying sum(Fx)=0 Ax=-300;//N, X component of reaction at A alpha=atan(80/150);//radian //Free body member BCD //Applying sum(M_C)=0 F_DE=(-480*100-B*60)/(sin(alpha)*250);//N, Force in link DE printf("Force in link DE is F_DE=%.0f N\n Negative sign shows force is compressive\n",F_DE); //Applying sum(Fx)=0 Cx=F_DE*cos(alpha)-B;//N, X component of force exerted at C //Applying sum(Fy)=0 Cy=F_DE*sin(alpha)+Ay;//N, Y component of force exerted at C printf("Components of force exerted at C is Cx=%.0f N and Cy=%.0f N \n",Cx,Cy);