How to Use the cosh() Function in R

The cosh() function in R is “used to calculate the hyperbolic cosine of a number in radians“. It accepts the numerical value as an argument and returns the hyper tangent of the cosine of that numeric value.

Syntax

cosh(x)

Parameters

x: It is a column to calculate.

Return value

The cosh() function returns the hyperbolic cosine of a number (in radians) sent in as a parameter.

Example 1: R program to use the cosh() function

Let’s calculate the cosh value of 1.

cosh(1)

Output

[1] 1.543081

Let’s calculate the cosh value of 0.

cosh(0)

Output

[1] 1

Example 2: Using the cosh() function with a complex number

Define a complex value and pass that value to the cosh() function.

d <- 5 + 1i
cosh(d)

Output

[1] 40.09581+62.43985i

Example 3: Using the cosh() function with a Vector

To create a Vector in R, you can use the c() function. Then pass that vector to the cosh() function.

rv <- c(-1, 0.5, 0, 0.5, 1)
cosh(rv)

Output

[1] 1.543081 1.127626 1.000000 1.127626 1.543081

Example 4: Passing a pi to the cosh() function

The pi is an inbuilt constant in R programming, and its value is 3.141593.

Let’s find the pi constant’s cosh() value.

cosh(pi)

Output

[1] 11.59195

Let’s see another example of pi.

cosh(pi / 4)

Output

[1] 1.324609

Plotting the cosh() function to a graph

We can use the seq() function to create a series of values and pass that to the plot() function, creating a line chart.

dt <- seq(-1, 1, by = 0.05)
plot(dt, cosh(dt), typ = "l", col = "red")
abline(v = 0, lty = 6, col = "blue")

Output

That’s it.

Krunal Lathiya

Krunal Lathiya is a Software Engineer with over eight years of experience. He has developed a strong foundation in computer science principles and a passion for problem-solving. In addition, Krunal has excellent knowledge of Data Science and Machine Learning, and he is an expert in R Language.