This is our indeterminate form. If you want to think about it, this is our f of x. That f of x right there is sine of x. Our g of x, this g of x right there for this first case, is the x. g of x is equal to x, and f of x is equal to sine of x. Notice, we definitely know that this meets the first two constraints. The limit as x, and in this case, c is 0. The limit as x approaches 0 of sine of x is 0, and the limit as x approaches 0 of x is also equal to 0.