If the angle between two vectors $A$ and $B$ is $120^{\circ}$, its resultant $C$ will be
$C=|A-B|$
$C < |A-B|$
$C > |A-B|$
$C=|A+B|$
The resultant of $A$ and $B$ makes an angle $\alpha$ with $A$ and $\beta$ with $B$, then
The vector sum of two forces is perpendicular to their vector differences. In that case, the force