two forces with magnitude of 25N and 18N respectively are inclined at an angle of 120degree to each other. calculate the resultant force and the angle it makes with the 18N force.

Answer 1

Fr = 25[120o] + 18[0o].

Fr = (25*Cos120+18) + (25*sin120)i.
Fr = 5.5 + 21.65i = 22.3N[75.7o] = The resultant force.

Fr is 75.7o N. of the 18N. force.

Answer 2

Fr=25[120°]+18[0°]
Fr=[25*cos 120+18+[25*sin120]
Fr=5•5+21•65 =22•3N[75•7]= the resultant force

Fr is 75•70N. of the 18 N. force