Times sine of x over one plus cosine of x. All I've done is I've leveraged a trigonometric identity and I've done a little bit of algebraic manipulation. Well here, the limit of the product of these two expressions is going to be the same thing as the product of the limits. So I can rewrite this as being equal to the limit as x approaches zero of sine of x over x times the limit as x approaches zero of sine of x over one plus cosine of x. Now, we said going into this video that we're going to assume that we know what this is. We've proven it in other videos. What is the limit as x approaches zero of sine of x over x?