9 sec squareA -9 tan square A
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Answer:
9(1+tan"2A)-9tan"2A
=9+9tan"2A-8tan"2A
=9
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9 sec^2 A - 9 tan^2 A
= 9*(sec^2 A - tan^2 A)
= 9*(1)
= 9 ——> Answer
= 9*(sec^2 A - tan^2 A)
= 9*(1)
= 9 ——> Answer
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