Let non-zero vectors and satisfy and

MATHEMATICS · Single correct · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

Let non-zero vectors

\mathbf{r}

and

\mathbf{s}

satisfy

|\mathbf{r}|=|\mathbf{s}|

and

|\mathbf{r}+\mathbf{s}|=\sqrt{3}\,|\mathbf{r}-\mathbf{s}|

. The angle between

\mathbf{r}

and

\mathbf{s}

is (a)

120^{\circ}

(b)

30^{\circ}

(c)

60^{\circ}

(d)

90^{\circ}