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clear
//
//variable declaration
//summation of all horizontal forces is zero & vertical forces is zero.
P1=(20) //vertical down Load at 2m from A,KN
P2=(30) //uniform distributed load from 2m to 6m from A,KN/m(in 4m of span)
P3=(60) //Inclined down to right Load at angle 45° at 7m from A,KN
theta3=45
//horizontal,vertical component at B is Hb,Vb respectively.
Ra=(P1*7+P2*4*5+P3*2*sin(theta3*%pi/180))/(9) //reaction at B point,KN
printf("\n RA= %0.4f KN",Ra)
Hb=P3*cos(theta3*%pi/180)
printf("\n HB= %0.4f KN",Hb)
//now vertical component
Vb=P1+P2*4+P3*sin(theta3*%pi/180)-Ra
printf("\n VB= %0.4f KN",Vb)
Rb=sqrt((Hb**2)+(Vb**2))
printf("\n RB= %0.4f KN",Rb)
alpha=(atan(Vb/Hb))*180/%pi
printf("\n alpha= %0.2f °",alpha)
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