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यदि z(r)="cos"(2rpi)/5+i"sin"(2rpi)/5,r=...

यदि `z_(r)="cos"(2rpi)/5+i"sin"(2rpi)/5,r=0,1,2,3,4……..` हो तो `z_(1)z_(2)z_(3)z_(4)z_(5)` बराबर होगा

A

`-1`

B

`0`

C

`1`

D

इनमें से कोई नहीं

लिखित उत्तर

Verified by Experts

The correct Answer is:
C
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