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//Let ABC be the triangle of forces,'theta' be the angle between F1 and F2, and 'alpha' be the angle between resultant and F1
//
//variable declaration
cnv= 180/%pi
F1=(400) //all forces are in newtons,'N'
F2=(260)
R=(520)
//calculations
theta=acos(((R**2)-(F1**2)-(F2**2))/(2*F1*F2))*cnv
alpha=asin(F2*sin(theta*%pi/180)/R)*cnv
printf("\n theta= %0.2f °",theta)
printf("\n alpha= %0.2f °",alpha)
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