Is there a formula of finding the area of a triangle given three sides? Aside from using the law of cosine?

Aside from

1/2 a c sinB

1/2 a b sinC

1/2 b c sinA

given sides a,b,c = ???

i only need a formula

help!

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- Aug 8th 2006, 03:57 AM^_^Engineer_Adam^_^Help Urgent
Is there a formula of finding the area of a triangle given three sides? Aside from using the law of cosine?

Aside from

1/2 a c sinB

1/2 a b sinC

1/2 b c sinA

given sides a,b,c = ???

i only need a formula

help! - Aug 8th 2006, 04:08 AMCaptainBlackQuote:

Originally Posted by**^_^Engineer_Adam^_^**

Put $\displaystyle s=\frac{1}{2}(a+b+c)$, then area:

$\displaystyle A=\sqrt {s(s-a)(s-b)(s-c)}$

RonL - Aug 8th 2006, 04:25 AM^_^Engineer_Adam^_^
Thanks agen captain!