04-05-2012, 08:04 AM
(04-04-2012, 10:11 PM)Imad Jomaa Wrote:(04-04-2012, 07:31 AM)Tom K. Wrote:
Really? It's undefined by most standards. Cosine only works between -pi and pi
No. cos^(-1) has a domain of -1 to 1, pi is out of its domain.
Not if we are working in radians