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If zr=cos(pi/(3r))+isin(pi/(3r)),r=1,2,3...

If `z_r=cos(pi/(3_r))+isin(pi/(3_r)),r=1,2,3, ,` prove that `z_1z_2z_3 z_oo=idot`

A

`i`

B

`-i`

C

1

D

`-1`

Text Solution

Verified by Experts

The correct Answer is:
A
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