Let Z=x+iy is a complex number, such tha...

Let `Z=x+iy` is a complex number, such that `x^(2)+y^(2)=1.` In which of the following cases `(Z)/(1-Z)" "("for "x ne1)` lies in the `"II"^("nd")` quadrant? `(AA x,y in R, i^(2)=-1)`

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