cos() Function in R

cos() function is a built-in function in R that calculates the cosine of a single number or a vector of numbers. This guide shows how to use the cos() function in R.

Syntax

cos(x)

Argument

• x = It is the numeric vector you want to calculate the cosine of.

Here are some examples of the cos() function in R:

Example 1: Calculate the cosine of a number

#calculating the cosine value of a number
cos(0)
#calculating the cosine value of a number stored in a variable
x = 5
cos(x)

Output

[1] 1
[1] 0.2836622

Example 2: Calculate the cosine of a vector

#calculating the cosine value of a vector
x = (c(0,1, 2))
cos(x)

Output

[1] 1.0000000 0.5403023 -0.4161468