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The joint equation of pair of lines pass...

The joint equation of pair of lines passing through the origin and making an angle of `45^(@)` with the line `3x+y=0` is

A

`x^(2)-2cosec2alphaxy+y^(2)=0`

B

`x^(2)+2cosec2alphaxy+y^(2)=0`

C

`x^(2)-2sec2alphaxy+y^(2)=0`

D

`x^(2)+2sec2alphaxy+y^(2)=0`

Text Solution

Verified by Experts

The correct Answer is:
D
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