
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 triangle $ABC$, let $a$, $b$, and $c$ be the sides opposite to angles $A$, $B$, and $C$ respectively, where $\frac{\pi}{4} < B < \frac{\pi}{2}$ and $a \cos B - b \cos A = \frac{3}{5}c$. Determine the maximum value of $\tan 2B \cdot \tan^3 A$.

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