Document that trig functions accept/return values in radians.

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 38350c1bd35a6deaa7513ab9b412d98dd25d36b7..bf31ee5311503c8469a74f0bf055bd0c373b99c9 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -1,4 +1,4 @@
-
+
 
  
   Functions and Operators
@@ -910,7 +910,11 @@
    Finally,  shows the
    available trigonometric functions.  All trigonometric functions
    take arguments and return values of type double
-   precision.
+   precision. Trigonometric functions arguments are expressed
+   in radians. Inverse functions return values are expressed in
+   radians.  See unit transformation functions
+   radians() and
+   degrees() above.
   
 
    
@@ -941,7 +945,7 @@
    
     Trigonometric Functions
 
-    2">
+    3">
      
       
        Function