Answer:
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.