Mathematics 0580 · IGCSE · Non-right-angled triangles

Non-right-angled triangles — practice question

For triangle $PQR$, $PQ = 8\text{ cm}$ and $QR = 7\text{ cm}$. Its area is $17\text{ cm}^2$.

(main)[3]

Calculate the pair of possible values for angle $PQR$.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The two possible values are $37.4$ and $142.6$.” …