diff --git a/题库0.3/Problems.json b/题库0.3/Problems.json
index dacb2658..8c1e8a9a 100644
--- a/题库0.3/Problems.json
+++ b/题库0.3/Problems.json
@@ -497602,7 +497602,7 @@
     },
     "018364": {
         "id": "018364",
-        "content": "已知$\\alpha$为钝角, 且$\\sin (\\dfrac{\\pi}{4}+\\alpha)=\\dfrac{3}{4}$, 求$\\sin (\\dfrac{\\pi}{4}-\\alpha)$的值.",
+        "content": "已知$\\alpha$为钝角, 且$\\sin (\\dfrac{\\pi}{4}+\\alpha)=\\dfrac{1}{4}$, 求$\\sin (\\dfrac{\\pi}{4}-\\alpha)$的值.",
         "objs": [],
         "tags": [
             "第三单元"
@@ -497614,7 +497614,8 @@
         "usages": [],
         "origin": "空中课堂必修第二册三角例题与习题",
         "edit": [
-            "20230705\t王伟叶"
+            "20230705\t王伟叶",
+            "20240204\t王伟叶"
         ],
         "same": [],
         "related": [],