Step-by-step explanation:
Angle ACB = 180° - 72° - 59° = 49°.
(Sum of angles in a triangle = 180°)
Now by Sine Rule,
Area of Triangle
= 0.5(CA)(CB)sin(Angle ACB)
= 0.5(7cm)(12cm)sin49°
= 31.7cm². (1d.p.)
