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If z(r)=cos.(2rpi)/(5)+isin.(2rpi)/(5), ...

If `z_(r)=cos.(2rpi)/(5)+isin.(2rpi)/(5)`, `r=0,1,2,3,4`, then `z_(1)z_(2)z_(3)z_(4)z_(5)` equals

A

`-1`

B

`0`

C

`1`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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