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If 3x=sectheta,(3)/(x) =tantheta then ...

If 3x=sec`theta,(3)/(x)` =tan`theta then `(x^(2)-(1)/(x^(2)))` I equal to:

A

9

B

3

C

`(1)/(9)`

D

1

Text Solution

Verified by Experts

The correct Answer is:
C
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