To find which of the given options is equivalent to \(6^{-2}\), we can evaluate \(6^{-2}\) first:
\[ 6^{-2} = \frac{1}{6^2} = \frac{1}{36} \]
Now, we can check the options:
- \( \frac{1}{36} \) - This is equivalent to \(6^{-2}\).
- \(36\) - This is not equivalent.
- \(16^{-2}\) - This is not equivalent.
- \( \frac{1}{6^{-2}} \) - This is not equivalent.
- \(126\) - This is not equivalent.
Thus, the correct response is:
\(\frac{1}{36}\)