Question

If you have a SSA angle case with two possible solutions, how can you check both solutions to make sure they are correct?

Answer 1

Three numbers (`a,b,c`) can be the lenght of three sides of a triangle if and only if each of them is greater then the difference of the other two, and less of the sum of the other two.

I.E: (if `a>b>c`)

`a>b-c`,
`b>a-c`,
`c>a-b`;

and:

`a<b+c`,
`b<a+c`,
`c<a+b`.