(costheta + isintheta)^4/(sintheta + ico...

`(costheta + isintheta)^4/(sintheta + icostheta)^5` is equal to.

A

`cos theta - isin theta`

B

`cos 9theta - isin 9theta`

C

`sin theta - icos theta`

D

`sin 9theta - icos 9theta`

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The correct Answer is:

D

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