diff --git a/题库0.3/Problems.json b/题库0.3/Problems.json
index 2a6e72ac..cfef2596 100644
--- a/题库0.3/Problems.json
+++ b/题库0.3/Problems.json
@@ -693411,14 +693411,15 @@
             "2023届高三-第二轮复习讲义-11-直线与圆"
         ],
         "genre": "",
-        "ans": "$\\pi-\\arctan\\dfrac {2}{3}}$",
+        "ans": "$\\pi-\\arctan\\dfrac {2}{3}$",
         "solution": "",
         "duration": -1,
         "usages": [],
         "origin": "2022届高三第二轮复习讲义-20240121修改",
         "edit": [
             "20230118\t王伟叶",
-            "20240121\t毛培菁"
+            "20240121\t毛培菁",
+            "20240122\t王伟叶"
         ],
         "same": [],
         "related": [