The sine and cosine functions are said to be [color=#0000ff][b][url=https://www.geogebra.org/m/QRmStjFg]periodic functions[/url][/b][/color]. [br][br]Interact with the applets below for a few minutes. [br]Can you write an expression ([color=#ff0000]in terms of [i]b[/i][/color]) for the period of each function?