9 sec^2 A-9 tan^2A=?
Answers
Answered by
6
9 ( 1/cos²A - sin²A/cos²A )
= 9( 1 - sin²A/cos²A)
= 9( cos²A/cos²A)
= 9 Ans.
Answered by
4
Explanation:
Answer is 9 because
Sec sqr - tan sqr = 1
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