What is the correct angle of inclination for an articulated ladder in the single or extension ladder configuration?

The correct angle of inclination for an articulated ladder in the single or extension ladder configuration is 75 degrees. This angle is important because it provides a balance between stability and reach when the ladder is in use. When the ladder is set at this angle, it ensures that the base is well-supported and minimizes the risk of tipping or slipping, which can occur if the ladder is too steep or too flat.

Setting the ladder at the appropriate angle enhances the safety of the user, allowing for better control when climbing and providing a firm foundation. A 75-degree angle is recognized as a best practice in ladder safety standards, helping to reduce the likelihood of accidents while using the ladder for various tasks, such as reaching heights for maintenance or construction work.