question: On the following unit circle, an acute angle $\theta$ is formed by a radius and x-axis.. Which two of the following expressions are OPPOSITE of $\cos (\theta)$ ? Choose 2 answers:
  Choices:
  A:$\cos (\pi+\theta)$
  B:$\cos \left(\frac{\pi}{2}-\theta\right)$
  C:$\cos (\pi-\theta)$
  D:$\cos (2 \pi-\theta)$
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: On the following unit circle, an acute angle $\theta$ is formed by a radius and x-axis.. Which two of the following expressions are OPPOSITE of $\cos (\theta)$ ? Choose 2 answers:
  Choices:
  A:$\cos (\pi+\theta)$
  B:$\cos \left(\frac{\pi}{2}-\theta\right)$
  C:$\cos (\pi-\theta)$
  D:$\cos (2 \pi-\theta)$
query_cot: Please first conduct reasoning, and then answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
  Question: On the following unit circle, an acute angle $\theta$ is formed by a radius and x-axis.. Which two of the following expressions are OPPOSITE of $\cos (\theta)$ ? Choose 2 answers:
  Choices:
  A:$\cos (\pi+\theta)$
  B:$\cos \left(\frac{\pi}{2}-\theta\right)$
  C:$\cos (\pi-\theta)$
  D:$\cos (2 \pi-\theta)$
question_for_eval: On the following unit circle, an acute angle $\theta$ is formed by a radius and x-axis.. Which two of the following expressions are OPPOSITE of $\cos (\theta)$ ? Choose 2 answers:
  Choices:
  A:$\cos (\pi+\theta)$
  B:$\cos \left(\frac{\pi}{2}-\theta\right)$
  C:$\cos (\pi-\theta)$
  D:$\cos (2 \pi-\theta)$