An acute equilateral triangle can be divided in half with a segment from a vertex to the middle of the opposite side. what type(s) of triangles are formed? what are the angle measures of the two new triangles

When you bisect an equilateral triangle, it forms two 30 60 90 triangles.
see figure 1 at this site:

Alright so I find it much easier to divide fractions by doing keep, switch flip. U might not have been taught this but it’s very helpful. So keep the first number, switch the division sign into multiplication sign and flip the fraction (so the decominator is now the numerator and vice versa)