Let the position vector of point A be hat(i) + hat(j) + hat(k) and B be - hat(i) + hat(j). The position

### Question Asked by a Student from EXXAMM.com Team

Q 2203134948.     Let the position vector of point A be hat(i) + hat(j) + hat(k) and B be

- hat(i) + hat(j). The position vector of a point R (vec(r) such that AR is

perpendicular to BR and vec(r) is not perpendicular to

(vec(r) - ( hat(j) + 2 hat(k) )) is .......................
A

hat(j) - 2 hat (k)

B

hat(j) + 2 hat (k)

C

2 hat(j) + 2 hat (k)

D

2 hat(j) - 2 hat (k)

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