I'm currently trying to find the values of two angles (
b) in this quadrilateral, where I know the diagonal (dashed) length and the lengths of two of the sides. These two side lengths are equal in length to one another and the other diagonal:
So far I've been able to express the values of the sides opposite to
b in terms of the known side lengths and the angles, but I don't know how I can relate this to the (dashed) diagonal length, because this quadrilateral will not always be a parallelogram or a kite. Furthermore, the two diagonals wouldn't always intersect at their midpoints.
Is there any way that I can calculate the values of
b using the values that I already have?