
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
A quadrilateral has three sides with lengths \(a=4 \sqrt{3}\), \(b=9\), and \(c=\sqrt{3}\). The angle between sides \(a\) and \(b\) is \(30^{\circ}\), and the angle between sides \(b\) and \(c\) is \(90^{\circ}\). What is the angle between the diagonals of the quadrilateral?

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