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Choose the correct option. 9sec^2A-9t...

Choose the correct option.
`9sec^2A-9tan^2A=`

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To solve the expression \( 9\sec^2 A - 9\tan^2 A \), we can follow these steps: ### Step 1: Factor out the common term We notice that both terms in the expression have a common factor of 9. We can factor this out: \[ 9\sec^2 A - 9\tan^2 A = 9(\sec^2 A - \tan^2 A) \] ...
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