take the arctangent of a number in go

In Go, you can use the math package to compute the arctangent of a number using the math.Atan() function. Atan() takes one argument, a float64 number, and returns the arctangent of that number in radians.

Here's an example code block:

main.go
package main

import (
    "fmt"
    "math"
)

func main() {
    num := 0.5
    arctan := math.Atan(num)
    fmt.Printf("The arctangent of %v is %v radians.\n", num, arctan)
}
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In this example, we use math.Atan() to compute the arctangent of the number 0.5 and store the result in the variable arctan. Then, we use fmt.Printf() to print out the result. The output of this program will be:

main.go
The arctangent of 0.5 is 0.4636476090008061 radians.
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