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If 2x= sec A " and "2/x = tan A, then t...

If `2x= sec A " and "2/x = tan A`, then the value of `2(x^2 - 1/x^2)` will be

A

`1/2`

B

`1/4`

C

`1/8`

D

`1/16`

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The correct Answer is:
A
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