Producto senos cosenos

sen(pi/n)*sen(2pi/n)*sen(3pi/n)...sen[(n-1)*pi/n]=n/2^(n-1)

Product(cos(kpi/(2n+1)), k, 1, n) = 1/2^n

http://i113.photobucket.com/albums/n205/leonsotelo/Sinus.gif
http://i113.photobucket.com/albums/n205/leonsotelo/Cosinus.gif

http://groups.google.es/group/es.ciencia.matematicas/browse_thread/thread/1bf0daac42e29c37/520b5cd238a5243e?hl=es&lnk=gst&q=producto+senos#520b5cd238a5243e

http://nte-serveur.univ-lyon1.fr/nte/immediato/recurrence/chap08/chap08d.htm

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