This worksheet can be used to draw a positive arc and its corresponding negative arc on the unit circle. The length of the arc is determined by the slider for [i]t[/i] and can be made to vary from 0 to 3.[br][br]An arc of length [i]t[/i] will be drawn in blue and the corresponding arc of length [i]-t[/i] will be drawn in red. In addition, the terminal points of each arc will be shown.