SOLUTION: sec^4 a+sec^2 a=1 ,prove is it identity or not,thanks and regards

SOLUTION: sec^4 a+sec^2 a=1 ,prove is it identity or not,thanks and regards

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Question 766373: sec^4 a+sec^2 a=1 ,prove is it identity or not,thanks and regards
Answer by tommyt3rd(5050) (Show Source): You can put this solution on YOUR website!
clearly not an identity try a=pi, leads to
2=1
:)
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