1.

Which of the following is true for z = (3 + 2 i sin theta)//(1 - 2 i sin theta), where i = sqrt(-1)

Answer»

z is purely IMAGINARY for `THETA = N PI pm pi//3, n in Z`
z is purely imaginary for `theta = n pi pm pi//2, n in Z`
z is purely imaginary for `theta = n pi, n in Z`
z is purely imaginary for `theta = 2 n pi, n in Z`

ANSWER :A


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