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Finding the Cotangent of Complex Number in Golang

  • Last Updated : 27 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 cotangent of the specified complex number with the help of the Cot() 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 Cot() function.

Syntax:

func Cot(y complex128) complex128

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

Example 1:




// Golang program to illustrate how to find the
// cotangent value of the given complex number
  
package main
  
import (
    "fmt"
    "math/cmplx"
)
  
// Main function
func main() {
  
    // Finding cotangent of the
    // specified complex number
    // Using Cot() function
    res_1 := cmplx.Cot(2 + 5i)
    res_2 := cmplx.Cot(-1 + 8i)
    res_3 := cmplx.Cot(-1 - 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: (-6.871348192386196e-05-0.9999406486514081i)
Result 2: (-2.0465587043065668e-07-0.9999999063376698i)
Result 3: (-1.5122128026576863e-06+0.9999993079230043i)

Example 2:




// Golang program to illustrate how to find the
// cotangent value of the given complex number
  
package main
  
import (
    "fmt"
    "math/cmplx"
)
  
// Main function
func main() {
  
    cnumber_1 := complex(1, 2)
    cnumber_2 := complex(3, 6)
  
    // Finding cotangent
    cvalue_1 := cmplx.Cot(cnumber_1)
    cvalue_2 := cmplx.Cot(cnumber_2)
  
    // Sum of two cotangent values
    res := cvalue_1 + cvalue_2
  
    // Displaying results
    fmt.Println("Complex Number 1: ", cnumber_1)
    fmt.Println("Cotangent 1: ", cvalue_1)
  
    fmt.Println("Complex Number 2: ", cnumber_2)
    fmt.Println("Cotangent 2: ", cvalue_2)
    fmt.Println("Sum : ", res)
  
}

Output:

Complex Number 1:  (1+2i)
Cotangent 1:  (0.03279775553375259-0.984329226458191i)
Complex Number 2:  (3+6i)
Cotangent 2:  (-3.433616824537947e-06-1.0000117990439865i)
Sum :  (0.03279432191692805-1.9843410255021774i)



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