Thanks - I've got it. :)
May I ask you - how do you know what to do with this question in the first place? I mean, how do you know to mulitply by one (which I understand and make sense) but how to do you what to multiply with?
I mean it could be sinx + cosx +1 or sinx - cos x + 1 or any...
Hi there, thanks a lot for your quick reply.
I've done the multiplication and now I ended up with (sin^2 x - cos^2 x - 1) / (2 + 2sinxcosx -2sinx)
I tried to further simplify into sin^2 x - 1 / 1 + sinxcosx - sin x, but then I'm stuck here.. wondering if this is the correct method...
Help! I spent 3 hours attempting this question. Prove the following identity :
(tan x + sec x -1) / (tan x - sec x + 1) = tan x + sec x
I've simplified Left Hand Side into cos and sine. Which ended up like this
(sine x - cos x + 1) / (sine x + cos x -1)
Then I'm stuck.
Any help is...