TRIGONOMETRIC IDENTITY

The bottom left graphing window shows a graph of \(a \cos(\omega t)\) in yellow and a graph of \(b \sin(\omega t)\) in cyan. The top left window shows a graph of the sum of these two functions in green, and a graph of \(A \cos(\omega t - \phi)\) in red.

Grab the \([a], [b], [A], [\phi],\) and \([\omega]\) sliders to set these parameters.

Control the display at right by means of the checkboxes below it, labeled \([a,b]\) and \([A,\phi]\).

© 2001 H. Hohn and H. Miller