4.8: Conformations of Disubstituted Cyclohexanes ...
https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Map%3A_Organic_Chemistry_(McMurry)/04%3A_Organic_Compounds-_Cycloalkanes_and_their_Stereochemistry/4.08%3A_Conformations_of_Disubstituted_Cyclohexanes
Overall, both chair conformations have 11.4 kJ/mol of steric strain and are of equal stability. In trans-1,2-dimethylcyclohexane, one chair conformer has both methyl groups axial and the other conformer has both methyl groups equatorial. The conformer with both methyl groups equatorial has no 1,3-diaxial interactions however there is till 3.8 kJ/mol of strain created by a gauche interaction.
DA: 63 PA: 12 MOZ Rank: 41