A proper subset describes the set in full. An improper subset strays from the original set.
3.2 is the Length of y 7.5 is the length of z and the length of x is 12.5
6 rows are empty.
112/7 = 16 rows
70/7 = 10 rows used.
Answer:

Step-by-step explanation:
From the diagram, side length
is opposite to angle A and side length
is adjacent to angle A.
Recall the mnemonics SOH CAH TOA.
We use TOA, because it involves opposite and adjacent.


The correct choice is A.