Answer:

Step-by-step explanation:
Let's use a start by using common denominators.
and 
Now, replace the original equation with the common denominators. 
Solve! 
Answer:
Opposite and hypotenuse
Step-by-step explanation:
In a right triangle,the two sides adjacent to the right angle are known as the opposite and the hypotenuse
4 because 4 x 4 =16 and 4+4=8