Example TRIG.0  Two Trigonometric Functions.
This example presents the sine function, $\sin(x) $ and  the cosine function, $\cos(x)$ with related tables, graphs, and mapping diagrams.

Martin Flashman,  Created with GeoGebra

Notice how the arrows on the mapping diagrams are paired with the points on the graph of the functions.
You can move the point for $x$ on the mapping diagram to see how the function value for the function $f(x) = \sin(x) $ or $g(x) = \cos(x)$ changes both on the diagram and on the graph.

Check the upper box to show points on the graph and arrows on the diagram for the function $f(x) = \sin(x)$ related to the data in the table.
Check the lower box to show the graph and arrows on the diagram for the function $g(x) = \cos(x)$.

Leave the upper box checked to see some of the relationship between the graphs and mapping diagrams of the sine and cosine functions.