Let xtan alpha + ysin alpha= alpha and ...

Let `xtan alpha + ysin alpha= alpha` and `xalpha cosec alpha + ycosalpha= 1` be two variable straight lines, `alpha` being the parameter. Let `P` be the point of intersection of the lines. In the limiting position when `a ->0,` the point `P` lies on the line :

`x=2`

`x=-1`

`y+1=0`

`y=2`

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