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

If `x_(r)=cos. (pi)/(2^(r))+ isin. (pi)/(2^(r))`, then `x_(1)x_(2)x_(3)....oo=`

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-i

B

-1

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i

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1

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HIMALAYA PUBLICATION-COMPLEX NUMBERS-QUESTION BANK
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