The applet below illustrates the dynamics of graphing one of the following trigonometric functions: [br][br][size=100][size=150][math]y=a\cdot sin\left(x\right)[/math] [br][br][math]y=a\cdot cos\left(x\right)[/math][/size][/size][br][br]Interact with this applet for a few minutes. Then answer the question that follows.
How does the parameter [math]a[/math] affect the graph of either parent function ([math]y=sin\left(x\right)[/math] or [math]y=cos\left(x\right)[/math])? [br]Describe in your own words.