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(Cos3alpha+isin3alpha)^(5)(cos4alpha-isi...

`(Cos3alpha+isin3alpha)^(5)(cos4alpha-isin4alpha)^(6)`

A

`cos9alpha-isin9alpha`

B

`cos9alpha+isin9alpha`

C

`cos8alpha-isin8alpha`

D

`cos8alpha+isin8alpha`

Text Solution

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