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If x-1/x=2i sin theta," then "x^4-(1)/(x...

If `x-1/x=2i sin theta," then "x^4-(1)/(x^4)=`

A

`2i sin 4theta`

B

`2cos5 theta`

C

`2i cos^5theta`

D

`2cos^5theta`

Text Solution

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The correct Answer is:
A
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