
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 the function $f(x) = 2\sin x \cos x - 2\cos^2 x + 1$,
(1) Find the maximum value of $f(x)$ and the corresponding value of $x$;
(2) If $f(\theta) = \frac{3}{5}$, find the value of $\cos\left(2\left( \frac{\pi}{4} - 2\theta\right)\right)$.

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