This question is asking "Where does cosine equal

?"
Based on our unit circle values and the domain of the cos^{-1} function, we see that at 30 degrees, or

, cosine is equal to

.
(2, 8) because 8 is not negative
hope it helps,
xXbeautyXx
Answer:
Millileters
Step-by-step explanation:
If it held 400 liters, it would be a pretty gigantic cup