Prove that (tan x)' = sec^2 x | eNotes - Study Guides, Lesson Plans, Homework Help, Answers & More -
Get an answer for 'Prove that (tan x)' = sec^2 x' and find homework help for other Math questions at eNotes ... (tan x)' = sec^2 x Let f(x) = tanx We know that tanx = sinx/ cosx ==> f(x) = sinx/ cosx Now to differenctiate f(x) we will use the chain rule:...