Mathematics 0580 · IGCSE · Non-right-angled triangles

Non-right-angled triangles — practice question

The diagram shows a triangle, NOT TO SCALE. Two sides measure 11 cm and 13 cm, and the angle enclosed by them is $39^{\circ}$.
(main)[2]

Calculate the area of the triangle.

Worked solution & mark scheme

This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “ $\frac{1}{2}\times13\times11\times\sin39$” …

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