
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
Given \(0 < a < \sqrt{3} \cos \theta\), \(\theta \in \left[-\frac{\pi}{4}, \frac{\pi}{3}\right]\), find the minimum value of \(f(a, \theta) = \cos^3 \theta + \frac{4}{3a \cos^2 \theta - a^3}\).

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