
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
In the triangles \( \triangle ABC \) and \( \triangle AEF \), \( B \) is the midpoint of \( EF \). Given that \( AB = EF = 1 \), \( BC = 6 \), \( CA = \sqrt{33} \), and \( \overrightarrow{AB} \cdot \overrightarrow{AE} + \overrightarrow{AC} \cdot \overrightarrow{AF} = 2 \), find the cosine of the angle between \( \overrightarrow{EF} \) and \( \overrightarrow{BC} \).

Present the answer in LaTex format: \boxed{Your answer}
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