1 files changed, 9 insertions, 0 deletions

diff --git a/pfc.1 b/pfc.1
index d29e063..efcdd2a 100644
--- a/pfc.1
+++ b/pfc.1
@@ -53,3 +53,12 @@ Division.
 .TP
 .B ^
 Exponentiation.
+.TP
+.B sin
+Sine function (radians).
+.TP
+.B cos
+Cosine function (radians).
+.TP
+.B tan
+Tangent function (radians).