Two sides of a triangle are $13\text{ cm}$ and $9\text{ cm}$, with included angle $48^\circ$.

Question

Two sides of a triangle are $13\text{ cm}$ and $9\text{ cm}$, with included angle $48^\circ$. Find the area to $3\text{ s.f.}$[2]

Accepted Answer

$43.5\text{ cm}^2$ (3 s.f.)

Trigonometry