Answer:
The height of the triangle is 5.2 inches
Explanation:
we know that
An equiangular triangle is a triangle where all three interior angles are equal in measure
Remember that an equilateral triangle has three equal sides and three equal interior angles
so
An equiangular triangle Is the same that an equilateral triangle. The measure of its interior angles is equal to 60 degrees
Let
h ----> the height of triangle
b ---> the length side of the triangle
Applying Pythagoras Theorem

we have

substitute





see the attached figure to better understand the problem