geometry!!
posted by shelby .
Find the lengths of the diagonals of this trapezoid. when the given length for the sides are (b,c), (b,c),(a,0), (a,0)

As drwls pointed out in your previous post below this one, you have a typo
I will assume that you missed a negative sign in your last point and it should have been (a,0)
So the diagonals run from (b,c) to (a,0) and
from (b,c) to (a,0)
I will do one, you do the other,
first diagonal = √(a(b))^2 + (0c)^2 )
= √(a^2 + 2ab + b^2 + c^2)