
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
Given that the vertex of angle $\theta$ is at the origin of the coordinates, the initial side is the non-negative semi-axis of $x$, and $P(-\frac{3}{5}, \frac{4}{5})$ is the intersection point of this angle with the unit circle, $\cos \theta = \_\_\_\_\_\_$.

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