If - -2- -3- - -n - 1 are nth roots of unity then 1- - 1- -2 - 1 - -n -1 equals-

The correct option is C n Since 1, #160;ω, #160;ω^2, #160;ω^3, ......... #160;ω^n 1 are nth roots of unity, therefore, we have the identity ...

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nth Root of a Complex Number

If ω, ω2, ω...

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If $ω, ω^{2}, ω^{3}, . . . . . . . . ω^{n - 1}$ are nth roots of unity then $(1 - ω) (1 - ω^{2}) . . . . . . . (1 - ω^{n - 1})$ equals:

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n

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n^{2}

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