# Area of triangle

To be able to calculate the of a , you need to know two sides and the included angle.

$Area = \frac{1}{2} ab \sin C$

### Example

Find the area of triangle ABC.

$Area = \frac{1}{2} \times bc \times \sin A$

$Area = 0.5 \times 3 \times 7 \times \sin (35^\circ )$

$Area = 6.02255...$

$Area = 6.02c{m^2}(to\,2\,d.p.)$