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Finding the Inverse Cosine of Complex Number in Golang

  • Last Updated : 26 Mar, 2020

Go language provides inbuilt support for basic constants and mathematical functions for complex numbers with the help of the cmplx package. You are allowed to find the inverse cosine of the specified complex number with the help of Acos() function provided by the math/cmplx package. So, you need to add a math/cmplx package in your program with the help of the import keyword to access the Acos() function.

Syntax:

func Acos(x complex128) complex128

Let us discuss this concept with the help of the given examples:

Example 1 :




// Golang program to illustrate
// how to find inverse cosine of
// complex number
package main
  
import (
    "fmt"
    "math/cmplx"
)
  
// Main function
func main() {
  
    // Finding inverse cosine of the
    // specified complex number
    // Using Acos() function
    res_1 := cmplx.Acos(3 + 5i)
    res_2 := cmplx.Acos(-4 + 8i)
    res_3 := cmplx.Acos(-8 - 7i)
  
    // Displaying the result
    fmt.Println("Result 1:", res_1)
    fmt.Println("Result 2:", res_2)
    fmt.Println("Result 3:", res_3)
}

Output:

Result 1: (1.0367972572007265-2.4598315216234306i)
Result 2: (2.031957962047241-2.886039504947561i)
Result 3: (2.4205679446613617+3.0565545070216835i)

Example 2 :




// Golang program to illustrate how to find
// Inverse Cosine of Complex Number
package main
  
import (
    "fmt"
    "math/cmplx"
)
  
// Main function
func main() {
  
    cnumber_1 := complex(5, 7)
    cnumber_2 := complex(6, 9)
  
    // Finding inverse cosine
    cvalue_1 := cmplx.Acos(cnumber_1)
    cvalue_2 := cmplx.Acos(cnumber_2)
  
    // Sum of two inverse cosine values
    res := cvalue_1 + cvalue_2
  
    // Displaying results
    fmt.Println("Complex Number 1: ", cnumber_1)
    fmt.Println("Inverse Cosine 1: ", cvalue_1)
  
    fmt.Println("Complex Number 2: ", cnumber_2)
    fmt.Println("Inverse Cosine 2: ", cvalue_2)
    fmt.Println("Final sum: ", res)
  
}

Output:

Complex Number 1:  (5+7i)
Inverse Cosine 1:  (0.9537320301189085-2.846288828208389i)
Complex Number 2:  (6+9i)
Inverse Cosine 2:  (0.9847612348751953-3.075060767946888i)
Final sum:  (1.9384932649941038-5.921349596155277i)



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