If za n dw are two complex number such t...

If `za n dw` are two complex number such that `|z w|=1a n da rg(z)-a rg(w)=pi/2` , then show that ` z w=-idot`

`bar(z) w = i`

`z bar(w) = (1)/(sqrt(2)) (-1+i)`

`z bar(w) = (1)/(sqrt(2)) (1-i)`

`bar(z)w = -i`

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