Shoes made for the sports of bouldering and rock climbing are designed to provide a great deal of friction between the foot and the surface of the rocks. Such shoes on smooth rock might have a coefficient of static friction of 0.82 and a coefficient of kinetic friction of 0.6. For a person wearing these shoes, what's the maximum angle (with respect to the horizontal) of a smooth rock that can be walked on without slipping? Enter your answer with 1 decimal place. (Do not include units in the final answer)