Algebra-2

We divide the equilateral triangle into two 30 - 60 - 90 triangles.

In a 30 - 60 - 90 triangle, the ratio of the sides is .

Let the side length of the equilateral triangle be , which is the hypotenuse of the 30 - 60 - 90 triangle.

The height of an equilateral triangle is equal to the longer leg of the 30 - 60 - 90 triangle, given by .

If

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