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i am telling answer no. 2
9 sec2a - 9 tan2a
9(sec2a - tan2a)
as we know that (sec2a - tan2a = 1)
so
9 ×1
9 is the answer
9 sec2a - 9 tan2a
9(sec2a - tan2a)
as we know that (sec2a - tan2a = 1)
so
9 ×1
9 is the answer
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