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The equation of the pair of straight lin...

The equation of the pair of straight lines, each of which makes an angle `alpha` with the line `y=x` is

A

`x^(2)+2xy sec 2 alpha+y^(2)=0`

B

`x^(2)+2xy cosec 2 alpha+y^(2)=0`

C

`x^(2)-2xy cosec 2 alpha +y^(2)=0`

D

`x^(2)-2xy sec 2 alpha +y^(2)=0`

Text Solution

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The correct Answer is:
D
NA
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