How do you solve the limit: lim x--> pi/2 (2x -pi)/(cos x)?
I end up with 0 over 0, which means the function can be factored, but how do I factor it?
when you get 0/0 with a rational function it can be factored thats not
true when you have trig functions in the mix.
See attachment for solution
I just noticed in the attachment I mistakenly put 2x- pi = 2t -pi
it should read 2x = 2t -pi