matematikk.net

Posted: **18/09-2011 16:59**

Hvordan utleder man en formel for sin( x/2 ) ?

Posted: **18/09-2011 17:03**

Posted: **18/09-2011 17:55**

frooken wrote:Hvordan utleder man en formel for sin( x/2 ) ?

http://www.matematikk.net/ressurser/per ... hp?aid=550

f.eks.

[tex]\sin(x/2)=2\sin(x/4)\cos(x/4)[/tex]

Sinus