In ADEF, what is sin D, in simplified form?

In simplified form, sin D is;

4/5

Step-by-step explanation:

The given figure and dimension parameters in the question are;

Triangle ΔDEF is a right triangle

The length of leg which is opposite side to the reference angle = 20

The length of segment which is the hypotenuse side of the right triangle ΔDEF = 25

The length of segment which is adjacent side to the reference angle = 15

By trigonometric ratios, we have;

Therefore, we have;

∴ In simplified form, sin(D) = 4/5.