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Mathematics 14 Online
OpenStudy (pottersheep):

Stuck on Trig Identities, help please :( How do I prove sec^2x - sec^2y = tan^2x- tan^2y ?

OpenStudy (anonymous):

put sec^2x = 1+tan^2x

OpenStudy (anonymous):

@pottersheep

OpenStudy (pottersheep):

OHHHHH. Thanks!

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