1.

Ifa = cos "" (4pi)/(3) + isin "" (4pi)/(3) then ((1 + a)/(2))^(3n) =

Answer»

`((1)/(2))^(3n)`
`(- (1)/(2))^(3n)`
`(- (1)/(2))^(N)`
`((1)/(2))^(n)`

ANSWER :B


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