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diff --git a/node_modules/locutus/php/math/acos.js b/node_modules/locutus/php/math/acos.js
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+"use strict";
+
+module.exports = function acos(arg) {
+  //  discuss at: http://locutus.io/php/acos/
+  // original by: Onno Marsman (https://twitter.com/onnomarsman)
+  //      note 1: Sorry about the crippled test. Needed because precision differs accross platforms.
+  //   example 1: (acos(0.3) + '').substr(0, 17)
+  //   returns 1: "1.266103672779499"
+
+  return Math.acos(arg);
+};
+//# sourceMappingURL=acos.js.map
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