The formula for calculating the force required to move an object (ignoring friction, etc.) up an inclined plane is: F = Mgsinθ Where: F = force (N) Mg = gravity (9.81m/s²) θ = angle of inclination (degrees out of 360, or radians?) The question I have is: what is used to describe the angle of the inclined plane? The SI unit for angles is the radian, but I get the impression that degrees out of 360 are used in the equation above? I tried to find an example calculation, but I failed to do so. If anyone knows whether radians are used or degrees, please let me know!