## Excel Function – ACOS()

Description To calculate the arccosine of a cosine (number). The Arccosine is an inverse of a cosine ranging from 0 to pi (3.14). Syntax ACOS(number) Examples The results are as follows: The DEGREES() function is the same as 180/PI(), which basically tells us Arccosine in Degrees References Want to see ACOS() in action? Check out how to measure Earth’s distances between any 2 points here.