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If E=2sqrt3 cm^2 , b=4 cm , c=2sqrt3 how much is cosA
 Oct 16, 2013
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Maybe you would be so kind to specify the parameters you entered, for ex., what is E? Is it the square of the triangle or what? If it is, then how can the sguare be of the same value as its side? Further, you forgot to indicate the type of triangle - is it right-, acute- or obtuse- angle? Impossible to understand and therefore to solve.
 Oct 16, 2013

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