Trigonometria di Base

Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2vV/ Traduzione in Italiano del video Basic Trigonometry http://www.youtube.com/watch?feature=player_embedded&v=Jsiy4TxgIME http://www.khanacademy.org/video/basic-trigonometry?playlist=Trigonometry Help us caption & translate this video! http://amara.org/v/B2vV/