Calculate the acute angle between the vectors and .

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

Problem

Calculate the acute angle between the vectors

\mathbf{a}=(2,1,-2)

and

\mathbf{b}=(3,-1,1)

. (a)

45^{\circ}

(b)

72^{\circ}

(c)

60^{\circ}

(d)

70^{\circ}