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Precalculus Function Question Help!
By iv_loves_pointe Comments: 171, member since Mon Aug 01, 2011
On Sun Nov 24, 2013 09:37 PM

I've been trying to figure this out for two days and I can't. Any assistance will be greatly appreciated. This question is due tomorrow. Please show all work. Thank you very much!

Express the area A of a an equilateral triangle as a function of perimeter P.

1 Replies to Precalculus Function Question Help!

re: Precalculus Function Question Help!
By Panda_Bear Comments: 414, member since Tue Feb 02, 2010
On Sun Nov 24, 2013 09:50 PM
area of a triangle = bh/2

equilateral triangle means that all 3 sides are equal. peremtrer = S1+s2+s3.

we know that s1,s2,s3 = b

calculate the height

h= inverse cos (b/2)/b

b= 1/3p

A(p)= (1/3p*h)/2

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