Law of Sines & Cosines
Law of Sines
a/sin(A) = b/sin(B) = c/sin(C)
Use when you know: AAS, ASA, or SSA (ambiguous case)
Law of Cosines
c² = a² + b² - 2ab·cos(C)
Use when you know: SAS or SSS
Area of Any Triangle
Area = ½ab·sin(C)
Use when you know: AAS, ASA, or SSA (ambiguous case)
Use when you know: SAS or SSS