Mathematics

Problem

\mathbf{a}

and

\mathbf{b}

are non-zero vectors such that the angle between them is

90^\circ

, what is the value of

\mathbf{a}\cdot\mathbf{b}

? a)

|\mathbf{a}||\mathbf{b}|

0

|\mathbf{a}|^{2}+|\mathbf{b}|^{2}

-|\mathbf{a}||\mathbf{b}|