SOLUTION: how do i verify this identity? (sec(alpha)-tan(alpha))(sec(apha)+tan(alpha))=1 thanks!

SOLUTION: how do i verify this identity? (sec(alpha)-tan(alpha))(sec(apha)+tan(alpha))=1 thanks!

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Question 894401: how do i verify this identity?
(sec(alpha)-tan(alpha))(sec(apha)+tan(alpha))=1
thanks!
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Change everything to sines and cosines.
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