Find the area of the triangle to the nearest centimeters, given that cm, cm, and cm.
In , the length of the side opposite to is , the length of the side opposite to is , and the length of the side opposite to is . The cosine rule states that . Substitute into the formula and simplify as follows:
Now find the measure of in .
The area, , of is given by the formula . Use the formula to find the triangle's area.
Thus, the area of to the nearest square centimetre is .