[size=100][size=150][color=#0000ff]The unit circle and the graphs of the [b]sine [/b]and [b]cosine [/b]functions are related. Check out this simulation to find out how one relates to the other.[br][br][/color][/size][/size][size=100][u]Note:[br]Click the START button to see the animation. [/u]In the right window, select the [color=#ff0000][b]sine [/b][/color]check box to view an animation of the sine function, [br]Move the sliders to change the frequency and phase on the left window. Also, it is possible to edit a new amplitude into box A.[/size][u][br][/u][br]Repeat the same with [b][color=#0000ff]cosine [/color][/b]function. [br]