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frac{3+2isintheta}{1-2isintheta} will b...

`frac{3+2isintheta}{1-2isintheta} ` will be real , if `theta = ` [where n is an integer]

A

`A.2npi`

B

`B.npi+frac{pi}{2}`

C

`C.npi`

D

`D.npi-frac{pi}{2}`

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