If one of the lines of the pair \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\] bisects the angle between positive directions of the axes, then a, b, h satisfy the relation [Roorkee 1992]

If one of the lines of the pair \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\] bisec

1.	If one of the lines of the pair \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\] bisects the angle between positive directions of the axes, then a, b, h satisfy the relation [Roorkee 1992]
A.	\[a+b=2\|h\|\]
B.	\[a+b=-2h\]
C.	\[a-b=2\|h\|\]
D.	\[{{(a-b)}^{2}}=4{{h}^{2}}\]
Answer» C. \[a-b=2\|h\|\]

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If one of the lines of the pair \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\] bisects the angle between positive directions of the axes, then a, b, h satisfy the relation [Roorkee 1992]

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