Merge c79e7d4 into 55e07ae

apache · Feb 24, 2019 · 878887d · 878887d
2 parents 55e07ae + c79e7d4
commit 878887d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/commons-numbers-complex/src/main/java/org/apache/commons/numbers/complex/Complex.java b/commons-numbers-complex/src/main/java/org/apache/commons/numbers/complex/Complex.java
@@ -1084,7 +1084,7 @@ public Complex pow(double x) {
      */
     public Complex sin() {
         return new Complex(Math.sin(real) * Math.cosh(imaginary),
-                           Math.cos(real) * Math.sinh(imaginary));
+                           -Math.cos(real) * Math.sinh(imaginary));
     }
 
     /**