In this lesson, you will learn about the trig functions sine, cosine, and tangent and their relationships with angle sizes and proportion in sides of a right triangle. These trigonometric values will be shown as ratios, which are primarily fractions. The lesson provides short, general examples, with the intention of a more detailed review in a subsequent lesson. You will also be introduced to the calculator and the importance of being in the correct mode when working with trig functions.
Learn about sin, cos, and tan ratios in Geometry.