Question

37. Vectors A-5i-a+3k and B-10-8j+bk are parallel to each other, then values of 'a' and 'b' are
(2) 4, 6
(3)-4, 6
(4) -4, -6​

Answer 1

if vectors are parallel then their cross product will be zero

A× B= AB sin thita

in this case thita=0

so A× B=0