Answer:
i^0 = 1
i^1 = i
i^2 = -1
i^3 = -i
i^4 = 1
This pattern repeats itself over and over again. If it is a large exponent, divide the exponent by 4. Then, apply that remainder to the rule explained above
EXAMPLE: i^207
207/4 = 51 remainder 3.
i^3 is -i,
so i^207 = -i
hope this is what you were looking for