Are you asking if it's true or false?
Because it's false, they are not necessarily adjacent.
In a right rectangle, we have:


For your exercice, hypotenuse=12
The exercise also inform the angle 60°, then:

Answer:
10/11>9/11>7/11
Step-by-step explanation:
It is 10 out of eleven which is bigger than 9 out of eleven which is bigger than 7 out of eleven.
That means she need to buy 2 packs of 100.