The included angle is the angle situated between [ ].
a known side and an angle
two known angles
two known sides
all three known sides
Flashcards for CIE IGCSE Maths The Cosine Rule, covering the key terms, formulae and methods you need to recall for Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended). 20 cards, matched to the CIE IGCSE Maths (0580) specification.