About: http://webisa.webdatacommons.org/115919414

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	At around 2:15 he states that the steps work whether you are using radians or degrees, but it does not seem reasonable that the polynomial will give you the same answer whether you use x = pi/2 or x=90.
http://www.w3.org/ns/prov#wasQuotedFrom	khanacademy.org