Final answer:
In a 30-60-90 triangle, the leg opposite from 30 degrees is labeled as the short leg.
Step-by-step explanation:
In a 30-60-90 triangle, the leg opposite from 30 degrees is labeled as the short leg (option A).
A 30-60-90 triangle is a right triangle with angles measuring 30 degrees, 60 degrees, and 90 degrees. The side opposite the 30 degree angle is the shortest side in the triangle. The side opposite the 60 degree angle is the longer leg, and the side opposite the 90 degree angle is the hypotenuse.
For example, if the short leg is labelled 'a' and the longer leg is labelled 'b', and the hypotenuse is labelled 'c', the relationship between the sides is given by the Pythagorean theorem: a² + b² = c².