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If xr=cos(pi/(2^r))+isin(pi/(2^r)) then ...

If `x_r=cos(pi/(2^r))+isin(pi/(2^r))` then `x_1,x_2,x_3,.....oo`

A

`-i`

B

`-1`

C

`i`

D

`1`

Text Solution

Verified by Experts

The correct Answer is:
B
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