Evaluate the function requested. Write your answer as a fraction in lowest terms. FInd Sin A

Answer: 4 / 5

Reasoning:

1)  The function sine is defined as:

sin(x) = opposite-leg / hypotenuse

2) From the figure:

x = A
opposite-leg = 20
hypotenuse = 25

3) Calculations:

sin(A) = 20 / 25 = 4 / 5

Answer: 4 / 5