The tanh() function in R calculates the number’s hyperbolic tangent in radians.
Syntax
tanh(num)
Parameters
num: It is a numeric value.
Return value
It returns the hyperbolic tangent of a number (in radians).
Example 1: Usage of tanh() function
tanh(1)Output
[1] 0.7615942If you pass the 0 to the tanh() function, it will return 0.
tanh(0)Output
[1] 0Example 2: Using tanh() function with a vector
vec <- c(-1, 0.5, 0, 0.5, 1)
tanh(vec)Output
[1] -0.7615942 0.4621172 0.0000000 0.4621172 0.7615942Example 3: Passing a pi, positive, and negative number
The pi is a built-in constant; its value is 3.141593.
data_one <- tanh(0.9)
print(paste0("tanh(0.9): ", data_one, " radians"))
data_two <- tanh(-0.75)
print(paste0("tanh(-0.75): ", data_two, " radians"))
data_three <- tanh(0.45) * (180.0 / pi)
print(paste0("tanh(0.45): ", data_three, " degrees"))
Output
[1] "tanh(0.9): 0.716297870199024 radians"
[1] "tanh(-0.75): -0.635148952387287 radians"
[1] "tanh(0.45): 24.1730323815932 degrees"
Plotting the tanh() function
dt <- seq(-1, 1, by = 0.05)
plot(dt, tanh(dt), typ = "l", col = "red")
abline(v = 0, lty = 6, col = "blue")Output
That is it.
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