A) \[\frac{\pi }{6}\]
B) \[\frac{\pi }{2}\]
C) \[0\]
D) \[\frac{\pi }{3}\]
Correct Answer: B
Solution :
Given pair of lines is \[{{x}^{2}}+2xy-{{y}^{2}}=0\] Here, \[a=1,\] \[b=-1,\] \[h=1\] Now, \[a+b=1-1=0\] Hence, given pair of lines are perpendicular.
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