Cos-1 Calculator

Calculates the inverse cosine (arccos) value for a given number. This function determines the angle whose cosine equals the input value, providing an answer typically measured in radians or degrees depending on the user's settings. Users simply enter a numerical argument into the designated field and press the calculate button to receive the corresponding angle measurement. The tool ensures mathematical accuracy by solving the inverse trigonometric relationship directly from the provided number. Students studying trigonometry, pre-calculus concepts, or physics would find this calculator useful for verifying manual calculations or understanding angular relationships. Educators can use it as a demonstration aid when teaching unit circle properties and periodic functions.