
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 the average distance from the sun to the earth is approximately $1.5 \times 10^{8}$ kilometers, and an isosceles triangle with a base length of $4.848$ millimeters and leg length of $1$ kilometer is formed, find the base length of an isosceles triangle with a vertex angle of $1''$.

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