Mount Everest does not have a single slope angle. Steepness varies dramatically by face and route:
~35° average slope across the entire massif.
The extreme steepness of the North Face and upper West Face demands advanced alpine skills: ice climbing, mixed terrain proficiency, and high-altitude endurance. Most commercial expeditions use the South Col (Nepal) or North Ridge (Tibet) routes, which follow less-vertical but still formidable corridors.
Slope angle alone doesn't dictate difficulty—altitude, ice conditions, weather, and objective hazards are equally critical.