1 files changed, 13 insertions, 3 deletions

diff --git a/pfc.1 b/pfc.1
index efcdd2a..b90cc65 100644
--- a/pfc.1
+++ b/pfc.1
@@ -53,12 +53,22 @@ Division.
 .TP
 .B ^
 Exponentiation.
+.SS Functions
 .TP
-.B sin
+.B dsin
+Sine function (degrees).
+.TP
+.B dcos
+Cosine function (degrees).
+.TP
+.B dtan
+Tangent function (degrees).
+.TP
+.B rsin
 Sine function (radians).
 .TP
-.B cos
+.B rcos
 Cosine function (radians).
 .TP
-.B tan
+.B rtan
 Tangent function (radians).