Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2ut/ Traduzione in Italiano del video Proof: Law of Sines http://www.youtube.com/watch?feature=player_embedded&v=APNkWrD-U1k http://www.khanacademy.org/video/proof--law-of-sines?playlist=Trigonometry Help us caption & translate this video! http://amara.org/v/B2ut/