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If one of the lines of my^2+(1-m^2)xy-mx...

If one of the lines of `my^2+(1-m^2)xy-mx^2=0` is a bisector of the angle between lines xy=0 , then `cos ^(-1) (m) `is

A

0

B

`pi//2`

C

`pi`

D

`3pi//2`

Text Solution

Verified by Experts

The correct Answer is:
A, C
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