Three forces act at point O $.$ If it is known that the $y-$component of the resultant R is $-4\mathrm{.}1$ kN and that the $z-$component is $4\mathrm{.}5$ kN $,$ determine $F_3,,$ and $R.$

Answers:

$F_3=$ kN

$=$ i $$

$R=$

i

kN