A single force acting at an angle is replaced by two forces, one along the horizontal axis and one along the vertical axis. What is this process called?

1. Adding several vectors gives one resultant, and the reverse operation splits one vector into several. 2. The vectors that add up to give the original are called its components. 3. Breaking a vector into its components is called resolving into components. 4. In practice the components chosen are at right angles to one another, usually horizontal and vertical, because that makes the arithmetic simple. _Source: Siyavula Physical Sciences Grade 11 (Everything Science, CC BY 4.0), Chapter 1: Vectors in two dimensions_