Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2v2/ Esercizi: http://www.khanacademy.org/exercise/graphs_of_sine_and_cosine Traduzione in Italiano del video Graph of the sine function http://www.youtube.com/watch?feature=player_embedded&v=2zoiW4PdVKo http://www.khanacademy.org/video/graph-of-the-sine-function?playlist=Trigonometry Help us caption & translate this video! http://amara.org/v/B2v2/