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lf a, b, c are real numbers and z is a c...

lf `a, b, c` are real numbers and `z` is a complex number such that, `a^2+b^2+c^2=1 and b+ic=(1+a)z` then `(1+iz)/(1-iz)` equals. (a) `(b-ic)/(1-ia)` (b) `(a+ib)/(1+c)` (c) `(1-c)/(a-ib)` (d) `(1+a)/(b+ic)`

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