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Calculate the perpendicular distance from $Q$ to $PR$.
Mathematics 0580 · IGCSE · Non-right-angled triangles
Non-right-angled triangles — practice question
The diagram depicts triangle $PQR$ with $PQ = 12.5\text{ cm}$, angle $\angle P = 42^\circ$ and angle $\angle Q = 115^\circ$. The figure is not drawn to scale.