Remove 'law of cosines' from Keywords since only Law of Sines is used.
DBsection changed to Law of Sines  and  Keywords cite only Law of Sines.
Change DBsection since "ambiguous case of Law of Sines" is cited,
but keep both Law of Sines and Law of Cosines in Keywords because
the analysis can use discriminant for a quadratic from Law of Cosines.
Given parameters for this problem, there are always two triangles.

Minimal effort corrections:
a) specify "largest a" rather than "smallest C" to provoke thinking
b) add 'law of sines' to Keywords since that is traditional context for
	side-side-angle being called "Ambiguous Case"
c) keep DBsection('Law of Cosines') since that is how answer is computed.
Merge pull request #49 from Dick-Lane/master

retag 5 that are not Law of Cosines, fix 1 to have unique solution