# Finding Hyperbolic Tangent of Specified Number in Golang

• Last Updated : 01 Apr, 2020

Go language provides inbuilt support for basic constants and mathematical functions to perform operations on the numbers with the help of the math package. You are allowed to find the hyperbolic tangent of the specified number with the help of Tanh() function provided by the math package. So, you need to add a math package in your program with the help of the import keyword to access the Tanh() function.

Syntax:

`func Tanh(y float64) float64`
• If you pass +Inf or -Inf in this function, then this function will return NaN.
• If you pass NaN in this function, then this function will return NaN.
• If you pass 0 in this function, then this function will return 0.

Example 1:

 `// Golang program to illustrate how to find``// the hyperbolic tangent of the given number`` ` `package main`` ` `import (``    ``"fmt"``    ``"math"``)`` ` `// Main function``func main() {`` ` `    ``// Finding the hyperbolic ``    ``// tangent of the given value``    ``// Using Tanh() function``    ``res_1 := math.Tanh(math.Pi / 4)``    ``res_2 := math.Tanh(math.Inf(-3))``    ``res_3 := math.Tanh(0)``    ``res_4 := math.Tanh(math.NaN())``    ``res_5 := math.Tanh(math.Pi)`` ` `    ``// Displaying the result``    ``fmt.Printf(``"Result 1: %.1f"``, res_1)``    ``fmt.Printf(``"\nResult 2: %.1f"``, res_2)``    ``fmt.Printf(``"\nResult 3: %.1f"``, res_3)``    ``fmt.Printf(``"\nResult 4: %.1f"``, res_4)``    ``fmt.Printf(``"\nResult 5: %.1f"``, res_5)``}`

Output:

```Result 1: 0.7
Result 2: -1.0
Result 3: 0.0
Result 4: NaN
Result 5: 1.0
```

Example 2:

 `// Golang program to illustrate how to find``// the hyperbolic tangent of the given number`` ` `package main`` ` `import (``    ``"fmt"``    ``"math"``)`` ` `// Main function``func main() {`` ` `    ``// Finding hyperbolic ``    ``// tangent of the given number``    ``nvalue_1 := math.Tanh(math.Pi / 3)``    ``nvalue_2 := math.Tanh(math.Pi / 6)`` ` `    ``// Sum of the given values``    ``res := nvalue_1 + nvalue_2`` ` `    ``// Displaying results``    ``fmt.Printf(``"%.1f + %.1f = %.1f"``, ``            ``nvalue_1, nvalue_2, res)`` ` `}`

Output:

`0.8 + 0.5 = 1.3`

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