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A. Simplify z^3 if z= 2cis(π/12) B. Using 1+i√3/1+i, find the exact value of cos(π/12) Could you please show working out as well?

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  • A. Simplify z^3 if z= 2cis(π/12) B. Using 1+i√3/1+i, find the exact value of cos(π/12) Could you please show working out as well?


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