If the vectors 2 hat(i) + 3hat(j) + c hat(k) and -3i + 6k are orthogonal the value of c is

If the vectors 2 hat(i) + 3hat(j) + c hat(k) and -3i + 6k are orthogon

1.	If the vectors 2 hat(i) + 3hat(j) + c hat(k) and -3i + 6k are orthogonal the value of c is
Answer» 0 `-1` 1 `1//2` ANSWER :C