Mathematics 0580 · IGCSE · Non-right-angled triangles

Non-right-angled triangles — practice question

The side lengths of a triangle are 11 cm, 10 cm and 9 cm.
(main)[4]

Calculate the triangle's largest angle.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: Accurate application of the cosine rule or an equivalent approach

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