Evaluate (1)/(i^(78))....

Evaluate `(1)/(i^(78))`.

Verified by Experts

The correct Answer is:

-1

`(1)/(i^(78))=(1)/(i^(78))xx(i^(2))/(i^(2))=-1" "[because i^(80)=(i^(4))^(20)=1]`

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