Question

PLSSS ANSWER!!!!!!!!!!!!

Answer 1

Look at the picture.

The formula of an area of a triangle:

`A_\Delta=(1)/(2)ab\sin\alpha`

In the equilateral triangle, the measures of all angles are the same and equal to 60°.

Therefore your answer is:

`(1)/(2)aa\sin(60^o)=(1)/(2)a^2\sin(60^o)`