change types to satisfy type checks

Uwe Krien · uvchik · commit abf02af1085b · 2016-11-14T09:17:40.000+01:00
diff --git a/pvlib/tools.py b/pvlib/tools.py
@@ -15,12 +15,12 @@ def cosd(angle):
 
     Parameters
     ----------
-    angle : float
+    angle : float or array-like
         Angle in degrees
 
     Returns
     -------
-    result : float
+    result : float or array-like
         Cosine of the angle
     """
 
