package main

import (
    "fmt"
    "math"
)

func main() {
    incx := 0.01
    incy := 0.1
    for x := 0.0; x < math.Pi/2.0; x+=incx {
        for y := 0.0; y < 10.0; y+=incy {
            z := math.Sin(x) - y*math.Cos(x)
            r := math.Sqrt(1 + math.Pow(y, 2))
            q := math.Acos(1/r)
            x2 := math.Asin(z/r) + q
            if x - x2 > 0.0001 {
                fmt.Println(x, x2)
            }
        }
    }
}