The direction cosines of the \(z-\) axis are

\(1,0,0\) \(0,0,1\) \(0,1,0\) \(1,1,1\)

\(0,0,1\)

Direction cosines of \(z-\) axis are \(\cos 90^{\circ},\cos 90^{\circ},\cos 0^{\circ}\)