A) Parallel
B) Inclined at \[{{60}^{o}}\]to each other
C) Perpendicular to each other
D) Inclined at \[{{30}^{o}}\]to each other
Correct Answer: C
Solution :
\[{{a}_{1}}{{a}_{2}}+{{b}_{1}}{{b}_{2}}=\frac{1}{a{b}'}+\frac{1}{{a}'b}=0\] Therefore, the lines are perpendicular.You need to login to perform this action.
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