# Finding Arcsine of the Specified Number in Golang

Go language provides inbuilt support for basic constants and mathematical functions to perform operations on the numbers with the help of the math package. You are allowed to find the arcsine of the specified number with the help of Asin() function provided by the math package. So, you need to add a math package in your program with the help of the import keyword to access the Asin() function.

Syntax:

`func Asin(y float64) float64`
• If the value of y < -1 or y > 1, then Asin(y) = NaN
• If you pass 0 in this function, then this function will return 0.

Example 1:

 `// Golang program to illustrate how ` `// to find arcsine of the given number ` ` `  `package main ` ` `  `import ( ` `    ``"fmt"` `    ``"math"` `) ` ` `  `// Main function ` `func main() { ` ` `  `    ``// Finding arcsine of the given value ` `    ``// Using Asin() function ` `    ``res_1 := math.Asin(1) ` `    ``res_2 := math.Asin(-1) ` `    ``res_3 := math.Asin(0) ` `    ``res_4 := math.Asin(3) ` ` `  `    ``// Displaying the result ` `    ``fmt.Printf(``"Result 1: %.1f"``, res_1) ` `    ``fmt.Printf(``"\nResult 2: %.1f"``, res_2) ` `    ``fmt.Printf(``"\nResult 3: %.1f"``, res_3) ` `    ``fmt.Printf(``"\nResult 4: %.1f"``, res_4) ` `} `

Output:

```Result 1: 1.6
Result 2: -1.6
Result 3: 0.0
Result 4: NaN
```

Example 2:

 `// Golang program to illustrate how ` `// to find arcsine of the given number ` ` `  `package main ` ` `  `import ( ` `    ``"fmt"` `    ``"math"` `) ` ` `  `// Main function ` `func main() { ` ` `  `    ``// Finding arcsine  ` `    ``// of the given value ` `    ``nvalue_1 := math.Asin(1) ` `    ``nvalue_2 := math.Asin(-1) ` ` `  `    ``// Sum of the given values ` `    ``res := nvalue_1 + nvalue_2 ` ` `  `    ``// Displaying results ` `    ``fmt.Printf(``"%.1f + %.1f = %.1f"``,  ` `           ``nvalue_1, nvalue_2, res) ` ` `  `} `

Output:

`1.6 + -1.6 = 0.0`

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