If vec(A) = 7hat(i) + 2hat(j)- 3hat(k) and vec(B) = hat(i) + hat(j) + 2chat(k) are perpendicular vectors, the value of c is

If vec(A) = 7hat(i) + 2hat(j)- 3hat(k) and vec(B) = hat(i) + hat(j) +

1.	If vec(A) = 7hat(i) + 2hat(j)- 3hat(k) and vec(B) = hat(i) + hat(j) + 2chat(k) are perpendicular vectors, the value of c is
Answer» `-1.5` 1.5 3 zero Answer :B