Mathematics

Problem

\mathbf{u}=\langle 2,0,0\rangle

and

\mathbf{v}=\langle 1,\sqrt{3},0\rangle

, the angle between

\mathbf{u}

and

\mathbf{v}

is a)

45^{\circ}

60^{\circ}

30^{\circ}

120^{\circ}