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

.
Answer: Scalene means "a triangle that has three unequal sides"
therefore it is D
What are the answer choices???
1 over 3 since its rise over run and the x would be on the bottom and since you dont have a y it would be 1