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If one jine of the pair of lines ax^2+2h...

If one jine of the pair of lines `ax^2+2hxy+by^2=0` bisects the angle between the coordinate axes, then prove that `(a+b)^2=4h^2`.

A

`a+b=2h`

B

`a-b=2|h|`

C

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

D

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

Text Solution

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The correct Answer is:
C
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