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If x(n)=cos(pi/3^(n))+isin((pi)/(3^(n)))...

If `x_(n)=cos(pi/3^(n))+isin((pi)/(3^(n)))`, then `x_(1),x_(2),x_(3),………………..x_(infty)` is equal to

A

1

B

`-1`

C

i

D

`-i`

Text Solution

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The correct Answer is:
C
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OBJECTIVE RD SHARMA-COMPLEX NUMBERS -Exercise
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  4. If (a1+ib1)(a2+ib2).....(an+ibn)=A+iB, then (a1^2+b1^2)(a2^2+b2^2).......

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