Question

How to calculate PI value with acos() function in Go

Answer 1

package main

import (
    "fmt"
    "math"
)

func main() {
    pi := math.Acos(-1)
    
    fmt.Printf("pi = %f\n", pi)
}



/*
run:
   
pi = 3.141593
  
*/

 

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Answer 2

package main

import (
    "fmt"
    "math"
)

func main() {
    pi := 2 * math.Acos(0.0);

    fmt.Printf("pi = %f\n", pi)
}



/*
run:
   
pi = 3.141593
  
*/

 

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