[b]Explore the graph of sine function[/b][br]1. Adjust the radius of the circle to 1 or 2 units according to your preference.[br]2. Select both sinus and trace on the left.[br]3. Starting from Point A, move the point A to complete one circle revolution.[br]4. Observe the shape of the sine curve created by the trace.[br][br][b]Explore the graph of cosine and tangent functions by following the 4 steps above.[/b]