The steps to construct and listen to trigonometric functions on the geometric sketchpad

1. Click [Line Segment Tool] and draw a line segment AB at the appropriate position on the drawing board. Select line segment AB, execute the [Measurement]-[Length] command, and change the label of the measurement value to [A]. Draw line segment CD in the same way, and change the label of the measurement value to [f].

2. Execute the [Data]-[New Function] command to open the new function dialog box and create a new function

3. Select the new function and execute [Edit]-[Operation Button] —[Sound] command, construct [hear function f] button.

4. Right-click the newly created function, select the [Draw Function] command in the pop-up drop-down menu, and click [Yes] in the pop-up trigonometric function prompt box to draw the graph of the function.

Click the [Hear function f] button to make a sound. Drag the endpoint of the line segment to change the size and frequency of the sound.

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