A) Parallel to each other
B) Perpendicular to each other
C) Inclined at an angle of \[{{60}^{o}}\]
D) Neither perpendicular nor parallel
Correct Answer: B
Solution :
\[|\mathbf{a}+\mathbf{b}|=|\mathbf{a}-\mathbf{b}|\]; Squaring both sides, we get \[4\mathbf{a}.\mathbf{b}=0\] \[\Rightarrow \mathbf{a}\] is perpendicular to \[\mathbf{b}.\]You need to login to perform this action.
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