Angle of Inclination of Plane to Horizontal is the angle at which a plane is tilted with respect to the horizontal surface, affecting the force applied. And is denoted by αinclination. Angle of Inclination of Plane to Horizontal is usually measured using the Degree for Angle. Note that the value of Angle of Inclination of Plane to Horizontal is always positive. Typically, the value of Angle of Inclination of Plane to Horizontal lies in the range from 0 to 90.