Mathematics 0580 · IGCSE · Non-right-angled triangles

Non-right-angled triangles — practice question

A triangle sketch, drawn not to scale, has sides of $11\text{ cm}$ and $5\text{ cm}$ with a base of $13\text{ cm}$. The angle at the top, between the two sloping sides, is marked $x\degree$.
(main)[4]

Calculate the value of $x$.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$102.1^\circ$ to $102.07^\circ$” …

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