
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 \( \triangle ABC \), the side lengths opposite angles \( A \) and \( B \) are \( a \) and \( b \) respectively. If \( 2a\sin B = \sqrt{3}b \), then the measure of angle \( A \) is \_\_\_\_\_\_.

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