5tan²A-5 sec²A ka maan he-
(a)-2. (b)3
(c)-5. (d)5
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1
5tan^2A-5sec^2A
5(tan^2-sec^2)
5×1 ...... tan2A -sec^2=1
5
5(tan^2-sec^2)
5×1 ...... tan2A -sec^2=1
5
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