What we want to do in this video is figure out what the limit as x approaches zero of one minus cosine of x over x is equal to. And we're going to assume we know one thing ahead of time. We're going to assume we know that the limit as x approaches zero of sine of x over x, that this is equal to one. And I'm not gonna reprove this in this video, but we have a whole other video dedicated to proving this famous limit. And we do it using the squeeze or the sandwich theorem. So let's see if we can work this out. So the first thing we're going to do is algebraically manipulate this expression a little bit.