A) | a | | b |
B) ? | a | | b |
C) 0
D) None of these
Correct Answer: B
Solution :
\[\mathbf{a}.\mathbf{b}=-|\mathbf{a}||\mathbf{b}|\], (\[\because \,\,\cos \theta =-1\]).You need to login to perform this action.
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