Mathematics 0580 · IGCSE · Non-right-angled triangles

Non-right-angled triangles — practice question

A triangle $ABC$ is drawn, and it is not to scale. $AB = 5.9\text{ cm}$, $BC = 12.6\text{ cm}$, and angle $A = 79^\circ$.

(main)[4]

Calculate the angle $ABC$.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Correct application of the sine rule” …