diff --git a/题库0.3/Problems.json b/题库0.3/Problems.json
index a2168ce6..cb3a4d5d 100644
--- a/题库0.3/Problems.json
+++ b/题库0.3/Problems.json
@@ -583927,7 +583927,7 @@
     },
     "021508": {
         "id": "021508",
-        "content": "利用诱导公式求下列各值, 要求写出必要的步骤, 且不能使用计算器:\\\\\n(1) $\\sin (-\\dfrac{\\pi}{3})=$\\blank{200};\\\\\n(2) $\\cos (-\\dfrac{13 \\pi}{4})=$\\blank{200};\\\\\n(3) $\\tan \\dfrac{26 \\pi}{3}=$\\blank{200};\\\\\n(4) $\\cot (-\\dfrac{31 \\pi}{6})=$\\blank{200}.",
+        "content": "利用诱导公式及锐角的三角比求下列各式的值, 要求写出必要的步骤:\\\\\n(1) $\\sin (-\\dfrac{\\pi}{3})=$\\blank{200};\\\\\n(2) $\\cos (-\\dfrac{13 \\pi}{4})=$\\blank{200};\\\\\n(3) $\\tan \\dfrac{26 \\pi}{3}=$\\blank{200};\\\\\n(4) $\\cot (-\\dfrac{31 \\pi}{6})=$\\blank{200}.",
         "objs": [],
         "tags": [
             "第三单元"
@@ -583949,7 +583949,8 @@
         ],
         "origin": "2025届高一下校本作业",
         "edit": [
-            "20230209\t王伟叶"
+            "20230209\t王伟叶",
+            "20240219\t王伟叶"
         ],
         "same": [],
         "related": [],