# Cosine Graphs: y = c + a cos [b(x – d)]

This applet is designed to let you investigate the graphs of cosine functions.
The function being graphed in blue is: y = c + a cos [b(x – d)].
This graph can easily be compared to the graph of y = cos(x) that is graphed in red.
Use the sliders to change the values of a, b, c, and d.

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