Initial data commit

Task/Averages-Mean-angle/JavaScript/averages-mean-angle.js

@@ -0,0 +1,21 @@
+function sum(a) {
+    var s = 0;
+    for (var i = 0; i < a.length; i++) s += a[i];
+    return s;
+}
+
+function degToRad(a) {
+    return Math.PI / 180 * a;
+}
+
+function meanAngleDeg(a) {
+    return 180 / Math.PI * Math.atan2(
+        sum(a.map(degToRad).map(Math.sin)) / a.length,
+        sum(a.map(degToRad).map(Math.cos)) / a.length
+    );
+}
+
+var a = [350, 10], b = [90, 180, 270, 360],  c = [10, 20, 30];
+console.log(meanAngleDeg(a));
+console.log(meanAngleDeg(b));
+console.log(meanAngleDeg(c));