12 A particle has a speed of \(6 \mathrm {~ms} ^ { - 1 }\) in a direction relative to unit vectors \(\mathbf { i }\) and \(\mathbf { j }\) as shown in the diagram below.
\includegraphics[max width=\textwidth, alt={}, center]{b7df05bf-f3fc-4705-a13c-6b562896fa9f-18_307_542_1528_749} The velocity of this particle can be expressed as a vector \(\left[ \begin{array} { l } v _ { 1 }
v _ { 2 } \end{array} \right] \mathrm { ms } ^ { - 1 }\)
Find the correct expression for \(v _ { 2 }\)
Circle your answer.
[0pt] [1 mark]
\(v _ { 2 } = 6 \cos 30 ^ { \circ }\)
\(v _ { 2 } = 6 \sin 30 ^ { \circ }\)
\(v _ { 2 } = - 6 \sin 30 ^ { \circ }\)
\(v _ { 2 } = - 6 \cos 30 ^ { \circ }\)