A) \[|\mathbf{a}|\,=\,|\mathbf{b}|\]
B) \[|\mathbf{a}|\,=\,|\mathbf{b}|\] or angle between a and b is zero
C) \[|\mathbf{a}|\,\,=m\,|\mathbf{b}|\]
D) None of these
Correct Answer: B
Solution :
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