
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, the sides opposite to angles A, B, and C are denoted as a, b, c, respectively. Given that A = 2B, cosB = $\frac{2}{3}$, and $\overrightarrow{CA}$ • $\overrightarrow{CB}$ = 88. Find:
1. The value of cosC.
2. The perimeter of triangle ABC.

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