Mathematics

Problem

Given the vectors

\mathbf{p}=(3,-2,4)

and

\mathbf{q}=(-1,5,2)

, the angle between

\mathbf{p}

and

\mathbf{q}

is a)

\text{acute}

\text{right\;angle}

\text{obtuse}

\text{cannot\;be\;determined\;from\;the\;given\;data}