
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 $$\overrightarrow{a} = (3, 4)$$, and $$\overrightarrow{b}$$ is a unit vector.  
(1) If $$\overrightarrow{b} \parallel \overrightarrow{a}$$, find $$\overrightarrow{b}$$;  
(2) If $$\overrightarrow{b} \perp \overrightarrow{a}$$, find $$\overrightarrow{b}$$.

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