Given vector v please solve

Question

Given the vector vec v = langle1,3 rangle find a unit vector in the same direction as vec v

l1/10, 3/10\rangle; \

(sqrt(10))/10, (3sqrt(10))/10\rangle; \

(3sqrt(10))/10, (sqrt(10))/10\rangle;

1/6, 1/2\rangle;

1, 3\rangle

None of the above

Answer 1

One first computes the length of the vector and then scales the vector by the inverse of its length.