It does not contain an equal sign. It cannot be solved for unless the value of the variable is given.
The range is the possible y-values of the graph. If you have a specific equation, post it.
Answer:

Step-by-step explanation:
Using the Pythagorean identity
sin²x + cos²x = 1, then
sinx = 
Note that (
)² = 
sinΘ = 
=
= 
The answer would be 3 cups of juice