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If thetainRandi=sqrt(-1),"then"((1+sinth...

If `thetainRandi=sqrt(-1),"then"((1+sintheta+icostheta)/(1+sintheta-icostheta))^(n)` is equal to

A

`cos((npi)/(2)-ntheta)+isin((npi)/(2)-ntheta)`

B

`cos((npi)/(2)+ntheta)+isin((npi)/(2)+ntheta)`

C

`sin((npi)/(2)-ntheta)+icos((npi)/(2)-ntheta)`

D

`cos(n((pi)/(2)+2theta))+isin(n((pi)/(2)+2theta))`

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