why the following set of data does not determine a unique tr

why the following set of data does not determine a unique triangle?

A=50 DEG .b=21 a=19

Solution

A triangle is unique if all the sides are given that is sss, if two sides and including angle given that is SAS , if two angles and and the side between them is given that is ASA ,if the side and non icluding angle is given that is AAS .

Here the given set of data is following ASS. So it is not a unique triangle .