Let and . For which value of is parallel to…

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

Problem

Let

\mathbf{a}=4\hat{i}+5\hat{j}+6\hat{k}

and

\mathbf{b}=8\hat{i}+10\hat{j}+d\hat{k}

. For which value of

d

\mathbf{b}

parallel to

\mathbf{a}

? (a) 10 (b) 12 (c) 6 (d) 14