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If x+1/x=2 cos20^(@) then x^(3)+1/x^(3)=...

If `x+1/x=2 cos20^(@)` then `x^(3)+1/x^(3)=`

A

`1//2`

B

1

C

`1//4`

D

`1//8`

Text Solution

Verified by Experts

The correct Answer is:
B
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