Mathematics 0580 · IGCSE · Right-angled triangles

Right-angled triangles — practice question

The diagram shows a right-angled triangle $ABC$, and it is NOT TO SCALE. The lengths are $AB = 1.6$m and $BC = 2.8$m, with the right angle at $B$.

(a)[2]

Calculate $AC$.

(b)[2]

Calculate the size of angle $BAC$.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$AC^{2} = 1.6^{2} + 2.8^{2}$” …