About: http://webisa.webdatacommons.org/377846647

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	Apply the half angle identities to expressions, equations and other identities.
http://www.w3.org/ns/prov#wasQuotedFrom	ck12.org