
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 a sector with a central angle $\alpha$ and a radius $R$ of the circle it belongs to.  
(1) If $\alpha=60^\circ$ and $R=10\text{cm}$, find the area of the segment formed by the arc of the sector.  
(2) If the perimeter of the sector is a constant value $c$ ($c>0$), what should be the value of $\alpha$ in radians for the sector to have the maximum area?

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