Posted by Molly on Friday, February 22, 2013 at 6:56pm.
Is there a question here?
Sorry y'=
just use the quotient rule. If y = u/v y' = (vu'-uv')/v^2 y' = [(1+tanx)(cosx) - (sinx)(sec^2 x)]/(1+tanx)^2 = ((cosx - (sinx)(tan^2 x))/(1+tanx)^2