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//determine support reactions
//Refer fig. 3.51
//Taking moment about A
RB=(40+30*5*sind(45)+20*2*7)/6 //kN
HA=30*cosd(45) //kN
VA=30*sind(45)-RB+40 //kN (downwards)
printf("Required values are:-\nRB=%.2f kN\nHA=%.2f kN\nVA=%.2f kN downwards",RB,HA,-VA)
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