For each problem, write an equation for the given graph in terms of sine and then in terms of cosine. In the input line, type "f(x) =" followed by your equation, and press Enter to see if your equation matches the graph. (Be sure the "Show my graph" box is checked.)[br][br](For some problems, it may be helpful to use the pink and blue sliders. The pink slider moves a vertical line up and down the plane in increments of 1/2, while the blue slider moves a vertical line across the plane in increments of π/12 .)

Type "f(x) =" followed by your equation and then press Enter to see if your equation matches the given graph. (Make sure the "Show my graph" box is checked.)