Mathematics 0580 · IGCSE · Non-right-angled triangles

Non-right-angled triangles — practice question

A triangle is drawn and it is not to scale. Its base measures $12.4\text{ cm}$. The side on the left is $y\text{ cm}$. The angle at the top is $74\degree$, while the angle at the bottom right is $39\degree$.
(main)[3]

Calculate $y$.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Approach with the sine rule” …

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI