tanA + secA) - (sec^2A - tan^2A) = (secA + tanA)[1- (secA - tanA)]
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I hope the proving is correct
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Step-by-step explanation:
tanA+secA-(sec^2A-tan^2A)
tanA+secA-(secA+tanA)(secA-tanA)
secA+tanA[1-(secA-tanA)]
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