
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
The length of edge PQ of a tetrahedron PQRS is 45 units, and the lengths of the other five edges are 8, 15, 21, 29, and 35 units. Find the length of edge RS.

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