What essential feature is required to use the sine rule in any triangle?
A complete opposite pair (a side and its opposite angle).
A complete right-angle pair (the hypotenuse and a right angle).
A complete adjacent pair (a side and an angle beside it).
Two equal sides and the angle between them.
Flashcards for Edexcel IGCSE Maths The Sine Rule, covering the key terms, formulae and methods you need to recall for Paper 1 and Paper 2. 20 cards, matched to the Edexcel IGCSE Maths (4MA1) specification.
