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Law of sines: a/sin(A) = b/sin(B) = c/sin(C). Law of cosines: c² = a² + b² − 2ab×cos(C). Area = ½ab×sin(C) or Heron's formula: √(s(s−a)(s−b)(s−c)) where s = (a+b+c)/2. Three angles only: triangle is not uniquely determined (infinite similar triangles). SSA (two sides, non-included angle) may have 0, 1, or 2 solutions (ambiguous case).
Area: 30.0000