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. What I'm going to do is I'm gonna multiply both the numerator and the denominator by one plus cosine of x. So times the denominator, I have to do the same thing, one plus cosine of x. I'm not changing the value of the expression.