Asked by keyon
simplify tan ^2 - sec^2 x
Answers
Answered by
Reiny
I assume you meant to type
tan^2 x - sec^2 x
= sin^2 x/cos^2 x - 1/cos^2 x
= (sin^2 x - 1)/cos^2 x
= -cos^2 x/cos^2 x
= -1
tan^2 x - sec^2 x
= sin^2 x/cos^2 x - 1/cos^2 x
= (sin^2 x - 1)/cos^2 x
= -cos^2 x/cos^2 x
= -1
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