Question

prove that
(tan x + sec x - 1)/(tan x - sec x + 1) = cos x/1- sin x

Answer 1

put tanx=sinx/cosx

Answer 2

and secx=1/cosx

Answer 3

tan x = sin x /cos x
and sec x =1/cos x
so put it in the equation

Answer 4

i got
(sin x - cos x + 1)/(sin x + cos x - 1)