Let
`P""=""(-1,""0),""Q""=""(0,""0)""a n d""R""=(3,""3sqrt(3))`
be three points. The equation of the
bisector of the angle PQR
(1) `sqrt(3)x+y=0`
(2) `x+(sqrt(3))/2y=0`
(3) `(sqrt(3))/2x+y=0`
(4) `x+sqrt(3)y=0`
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