Assuming you have some angle measures, you could use the Law of Sines to solve for the missing side lengths, which states that,
[tex] \frac{a}{sinA}= \frac{b}{sinB}= \frac{c}{sinC}[/tex],
where a, b, and c correspond to the given sides you have, and A, B, and C represent the angles you have.
In this scenario, you would have to have the values for c (which we do), and have the angle measure of C. In addition, we would also need an angle measure that is either A or B.
Hope this helps a bit!
:)
