The points with position vectors

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

Problem

60\hat{i} + 3\hat{j}

40\hat{i} - 8\hat{j}

and

a\hat{i} - 52\hat{j}

are collinear, if

a

is equal to (1)

-40

(2)

40

(3)

20

(4) None of these