# 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?

##### 1 Answer

Jan 16, 2018

The area is

#### Explanation:

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 :

Here,

Plugging in the values;

a=1;

b=2;

Area of

***Do not forget to give the units...**