1.

Normal form of the line x+y+sqrt(2)=0 is

Answer»

`x"cos"(PI)/4+y"sin"(pi)/4=1`
`"cos"(3pi)/4+y"sin"(3pi)/4=1`
`x"cos"(5pi)/4+y"sin"(5pi)/4=1`
`x"cos"(7pi)/4+y"sin"(7pi)/4=1`

ANSWER :C


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