Calculate Inverse cosine of a value in R Programming – acos() Function Improve Improve Improve Like Article Like Save Article Save Share Report issue Report acos() function in R Language is used to calculate the inverse cosine value of the numeric value passed to it as argument. Syntax: acos(x) Parameter: x: Numeric value Example 1: # R code to calculate inverse cosine of a value # Assigning values to variables x1 <- -1 x2 <- 0.5 # Using acos() Function acos(x1) acos(x2) Output: [1] 3.141593 [1] 1.047198 Example 2: # R code to calculate inverse cosine of a value # Assigning values to variables x1 <- 0.224587 x2 <- 0.456732 # Using acos() Function acos(x1) acos(x2) Output: [1] 1.344277 [1] 1.096478 Last Updated : 01 Jun, 2020 Like Article Save Article Previous Rounding off to the ceiling or floor value in R Programming - trunc() Function Next Calculate Inverse tangent of a value in R Programming - atan() Function Share your thoughts in the comments Add Your Comment Please Login to comment...