Initial data commit

Task/Averages-Mean-angle/Go/averages-mean-angle-1.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"fmt"
+	"math"
+	"math/cmplx"
+)
+
+func deg2rad(d float64) float64 { return d * math.Pi / 180 }
+func rad2deg(r float64) float64 { return r * 180 / math.Pi }
+
+func mean_angle(deg []float64) float64 {
+	sum := 0i
+	for _, x := range deg {
+		sum += cmplx.Rect(1, deg2rad(x))
+	}
+	return rad2deg(cmplx.Phase(sum))
+}
+
+func main() {
+	for _, angles := range [][]float64{
+		{350, 10},
+		{90, 180, 270, 360},
+		{10, 20, 30},
+	} {
+		fmt.Printf("The mean angle of %v is: %f degrees\n", angles, mean_angle(angles))
+	}
+}

Task/Averages-Mean-angle/Go/averages-mean-angle-2.go

@@ -0,0 +1,9 @@
+func mean_angle(deg []float64) float64 {
+	var ss, sc float64
+	for _, x := range deg {
+		s, c := math.Sincos(x * math.Pi / 180)
+		ss += s
+		sc += c
+	}
+	return math.Atan2(ss, sc) * 180 / math.Pi
+}