Which of the following best describes the function of a resolver?

A resolver is fundamentally a device used in various engineering and robotics applications to determine the angle or position of an object. Its key function is to separate a vector into two perpendicular components, typically identifying the sine and cosine of a specific angle. This allows for precise calculations of angular positions or movements in a two-dimensional plane, which is critical for applications such as motion control systems.

This functionality distinguishes the resolver from other instruments that perform different tasks such as speed measurement or signal generation. Understanding that the resolver focuses on breaking down a vector into its right-angle components highlights its importance in navigation, robotics, and other fields where angle and position are crucial.