This expression cannot be simplified any further.
There are 360 degrees in the rhombus which means the equilateral triangles has 180 degrees (because it is half the rhombus and also it is the angle sum of a triangle). It is equilateral meaning all sides and angles are the same so they all must be 60 (180/3)
Now this must mean that angle a is equal to the opposing angle being 60
I think the answer is 10.3%
The line is going downwards
Solution: negative slope
The answer to your question is 0
