# Math Help - Help With Trignometric Limits

1. ## Help With Trignometric Limits

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?

2. 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

3. See attachment

in previous attachment I mistakenly put 2x- pi = 2t -pi

it should read 2x = 2t -pi