
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
Determine the value of the algebraic cofactor of the element $π$ in the determinant $$\begin{vmatrix} 2019 & 4 & 9 \\ π & sinθ & cosθ \\ -5 & sin \frac {π}{2} & cos \frac {π}{3}\end{vmatrix}$$.

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