1.

If Z=cos phi+isin phi(AA phi in ((pi)/(3),pi)), then the value of arg(Z^(2)-Z) is equal to (where, arg(Z) represents the argument of the complex number Z lying in the interval (-pi, pi] and i^(2)=-1)

Answer»

`(3phi+pi)/(2)`
`(3phi)/(2)`
`(3)/(2)(phi-pi)`
`(3phi-pi)/(2)`

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