If the sine of an angle in a right triangle is $$ \frac{4}{5...

Question Analysis
This problem assesses the ability to use the sine ratio to find the length of the opposite side in a right triangle.

Key Concept Explanation
The sine of an angle in a right triangle is defined as the ratio of the length of the opposite side to the length of the hypotenuse. Mathematically, this is expressed as:

Step-by-step Solution
1. Identify the given values: