Area of a Triangle (Leaving Cert Mathematics): Quizzes

$\frac{1}{2} \times \text{base} \times \text{height}$

Perpendicular distance to the base

$\frac{1}{2} \times a \times b \times \sin(C)$

Two sides and included angle known

$30$ cm²

$\frac{\sqrt{3}}{2}$

The angle between sides $a$ and $b$

$24$ cm²

Any side of the triangle

When height is given or easily found