Final answer:
The reference angle for 25 degrees is simply 25 degrees itself, as it is an angle in the first quadrant, which is already the smallest angle made with the x-axis.
Step-by-step explanation:
To find the reference angle for 25 degrees in a standard position (where its vertex is at the origin and one ray is on the positive x-axis), you simply evaluate how far away the angle is from the nearest x-axis. Since 25 degrees is already between 0 and 90 degrees, it is in the first quadrant, and this angle itself is its own reference angle because it is already the smallest angle made with the x-axis. The reference angle for a 25-degree angle is therefore 25 degrees.