Let and . Find, to the nearest whole degree, the angle between and…

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

Problem

Let

\mathbf{a}=\langle 2,-3,1\rangle

and

\mathbf{b}=\langle 4,0,-2\rangle

. Find, to the nearest whole degree, the angle between

\mathbf{a}

and

\mathbf{b}

. (a)

54^\circ

(b)

120^\circ

(c)

69^\circ

(d)

35^\circ