
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
\( AB \) and \( CD \) are two parallel chords located on opposite sides of the center \( O \) of a circle with radius 15. \( AB = 18 \), \( CD = 24 \).

Find the distance between the chords.

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