Graphs of Sine and Cosine: 1.2: An applet illustrating how the graphs of sine and cosine are related to the unit circle. Transformations of Functions: 1.3: An applet illustrating how transformations ...

In high school, you probably learned that trigonometric functions – like sine, cosine and tangent –can be derived, geometrically, from a circle (hence why ...

Students are taught the "unit circle" and its relationship to trigonometry, but many fail to make the leap on how crucial circles are for trig functions. With static graphs and equations, it's ...