A metallic system $OA$ is subjected to two forces $F_{AB}$ and $F_{AC}.$ The force in cable $AC$ is $5$ KN $.$ Given $F_{AB}=0\mathrm{.}912i+1\mathrm{.}713j-2\mathrm{.}286k($KN$)$

$+1\mathrm{.}01j-1\mathrm{.}346k$

Iart b$)2\mathrm{.}474,1\mathrm{.}355,1\mathrm{.}911,2\mathrm{.}314$

Irt c$)50\mathrm{.}4,65\mathrm{.}81,71\mathrm{.}02,44\mathrm{.}12$

The force $FA{C}_{AC}(KN)$ as a vector is represented as

The projection of $F_{AB}$ along $AC$ in $KN$ is

The angle between $AB$ and $AC$ is

Please whats the true options for these parts of question