If we express ((cos 2 theta-i sin 2 t...

If we express
`((cos 2 theta-i sin 2 theta)^(4)(cos 4 theta+i sin 4 theta)^(-5))/((cos 3 theta+i sin 3 theta)^(-2)(cos 3 theta-i sin 3 theta)^(-9))` in the form of `x+i y` we get

A

`"cos" 49 theta-i"sin"490`

B

`"cos" 230 theta-i"sin"23theta`

C

`"cos" 49 theta+i"sin"49theta`

D

`"cos" 21 theta+i"sin"21theta`

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The correct Answer is:

A

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