(tan x)(1-cot x)
Here's what I tried:
Sin/cos(1-cos/sin)
--That obviously didn't work
cos x/1-sin x=sec x + tan x
I don't really know how to begin on this one.
Any hints and help is appreciated. Thanks in advance.
of course it didn't work, there's no identity here! what should you be proving?
Consider the LHS.cos x/1-sin x=sec x + tan x
multiply through by $\displaystyle \frac {1 + \sin x}{1 + \sin x}$ and simplify
and use parentheses next time to clarify what you mean. you should have typed (cos x)/(1 - sin x). here it was easy to see what you meant, but it won't always be