/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: sstoud https://public.slidesharecdn.com/v2/images/profile-picture.png Life is "SIN" 90 = 1 Love is "COS" 90 = 0 but.... FRIENDSHIP IS TAN 90 = INFINITY IT HAS NO VALUE IN THIS UNIVERSE