If sides A and B of a triangle have lengths of 1 and 2 respectively, and the angle between them is #(2pi)/3#, then what is the area of the triangle?
The area is
You'll need the sine rule for area of the triangle.
The formula is:
Area of the
This drawing(sorry if it's clumsy) will show what I mean :
Plugging in the values;
*Do not forget to give the units...