Mathematics 0580 · IGCSE · Non-right-angled triangles

Non-right-angled triangles — practice question

In triangle $ABC$, $AB = 7\text{ cm}$, angle $A = 115^{\circ}$ and angle $B = 35^{\circ}$. The diagram is not drawn to scale.
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Calculate how long $BC$ is.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “12.7; acceptable answers lie between 12.68 and 12.69” …

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