From 1a179336354331cf9542e61197b84ccfc3324927 Mon Sep 17 00:00:00 2001
From: Michael R Sweet <michael.r.sweet@gmail.com>
Date: Fri, 1 Jul 2022 20:30:40 -0400
Subject: [PATCH] Fix pdfioContentMatrixRotate function.

---
 CHANGES.md      | 1 +
 pdfio-content.c | 7 +++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/CHANGES.md b/CHANGES.md
index 404e0a5..69556cc 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -8,6 +8,7 @@ v1.1.0 (Month DD, YYYY)
 - Added `pdfioFileCreateTemporary` function (Issue #29)
 - Added `pdfioDictIterateKeys` function (Issue #31)
 - Fixed "install-shared" target (Issue #32)
+- Fixed `pdfioContentMatrixRotate` function.
 
 
 v1.0.1 (March 2, 2022)
diff --git a/pdfio-content.c b/pdfio-content.c
index 0d27241..e1ccc3c 100644
--- a/pdfio-content.c
+++ b/pdfio-content.c
@@ -489,8 +489,11 @@ pdfioContentMatrixRotate(
     pdfio_stream_t *st,			// I - Stream
     double         degrees)		// I - Rotation angle in degrees counter-clockwise
 {
-  double dcos = cos(degrees / M_PI);	// Cosine
-  double dsin = sin(degrees / M_PI);	// Sine
+  double dcos = cos(M_PI * degrees / 180.0);
+					// Cosine
+  double dsin = sin(M_PI * degrees / 180.0);
+					// Sine
+
 
   return (pdfioStreamPrintf(st, "%g %g %g %g 0 0 cm\n", dcos, -dsin, dsin, dcos));
 }