if sec^(2)theta+tan^(@)theta=(7)/(12), t...

if `sec^(2)theta+tan^(@)theta=(7)/(12)`, then `sec^(4)theta-tan^(4)theta=`

A

`7/12`

B

`1/2`

C

`5/12`

D

1

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The correct Answer is:

A

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