I'd stick to using Heron's rule -- there is no reason why it shouldn't work given correct inputs, and it is less expensive computationally.
On 12/14/06, Danny Kodicek <[EMAIL PROTECTED]> wrote:
> I'm trying to figure the area of a triangle in Actionscript > using the perimeter values only, not the traditional simple formula: > > area = (height/2)*base Try: area = 1/2 * a * b * sin(C), where C is the angle between the two sides a and b. You can calculate C using the cosine rule: c^2 = a^2 + b^2 - 2ab * cos(C). A bit of manipulation will give you sin(C) in terms of cos(C) so you can avoid using any trig (sorry I have to rush so I don't have time to do it right now) HTH Danny _______________________________________________ [email protected] To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
_______________________________________________ [email protected] To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
