The vector diagram shows three coplanar forces acting on an object at P.The magnitude of the resultant of these three forces is 1 N.What is the direction of this resultant?

1 )
${\frac{p_I}{{p_o}+{p_L}}}$
2 )
${\frac{p_L}{p_I}}$
3 )
${\frac{p_L}{p_o}}$
${\frac{p_o}{p_I}}$
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