While AdkinsJr brings up valid points, in that you should have your prerequisites down, including trigonometry, you should know that Lang's A First Course in Calculus covers virtually all of the prerequisitse you might need, in the book itself.
For instance, the first two chapters cover basic properties of numbers, functions, exponents, and how to recognize, interpret, and graph different shapes, such as circles, ellipses, hyperbolas, and parabolas.
Additionally, right before the section that applies differentiation to sine, cosine, and tangent, Lang includes three preceding sections that, as he explains, will provide you with all of the knowledge you need to complete the rest of the chapter. For this reason, you shouldn't worry too much about your prerequisites, so long as you are planning on using Lang's book.