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Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2vZ/
Esercizi: http://www.khanacademy.org/exercise/trigonometry_1
Traduzione in Italiano del video
Using Trig Functions Part II
http://www.youtube.com/watch?feature=player_embedded&v=RoXmKYjpLGk