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Grade: 12th pass
        
Both the dot product and cross product of two vectors A and B is zero, when:
(A) vector A and B are parallel to each other
(B) vector A and B are antiparallel
(C) A and B are perpendicular to each other
D) Either the vector is zero
7 months ago

Answers : (1)

Arun
12289 Points
							
Dear student
 
When dot product is zero implies the two vectors are perpendicular. When cross product is zero implies the two vectors are parallel. So, the question is when two vectors are both perpendicular and parallel to each other? The answer is when at least one of them is trivial that is zero vector
 
Hence option D is correct.
 
Regards
Arun (askIITians forum expert)
7 months ago
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