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If one of the lines of the pair ax^(2)+2...

If one of the lines of the pair `ax^(2)+2hxy+by^(2)=0` bisects the angle between positive direction of the axes, then a, b and h satisfy the relation.

A

`a+b=2|h|`

B

`a+b=-2h`

C

`a-b=2|h|`

D

`(a-b)^2=4h^2`

Text Solution

Verified by Experts

The correct Answer is:
B
Since , `y=x` , should satisfy `ax^2+2hxy+by^2=0`
`therefore a+b=-2h`.
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