Posted by **Anonymous** on Sunday, May 27, 2007 at 4:46pm.

In any angle ABC prove that the perimeter = a/Sin A(Sin A + Sin B + Sin C)

Start with perimeter = a+b+c

but b= aSinB/sinA and

c= aSinC/SinA

and if you don't remember, a=a=a*SinA/

SinA

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