How to use mathematical constants (e.g., Pi, E) in Go?

To use mathematical constants like Pi and e in Go, you can make use of the "math" package. Here's an example:

package main

import (
    "fmt"
    "math"
)

func main() {
    fmt.Println(math.Pi) // Prints the value of Pi
    fmt.Println(math.E)  // Prints the value of e
}

Output:

3.141592653589793
2.718281828459045

You can access Pi using math.Pi and e using math.E. These constants are predefined in the "math" package.