
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 acute triangle ABC, a, b, and c are the sides opposite to angles A, B, and C respectively. It is given that (b - 2c)cosA = a - 2acos²(B/2).
(I) Find the value of angle A;
(II) If a = √3, find the range of values for b + c.

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