Question

The cross product of two vectors A and B is zero if

Answer 1

cross product of two vectors is zero only when the angle between them is 0

bcoz sin(0) = 0

Answer 2

Answer:

if these vectors are parallel or antiparallel to each other

Explanation:

if these vectors are parallel then Φ=0° and sin(Φ) = sin(0°) = 0

and if antiparallel then,

Φ=180° and

sin(Φ) = sin(180°) = 0