From 8456db714d5a2668506e1c2334425ed10f3e0b38 Mon Sep 17 00:00:00 2001 From: wangweiye7840 Date: Sun, 4 Feb 2024 15:58:06 +0800 Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=94=B918364=E9=A2=98=E9=9D=A2?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- 题库0.3/Problems.json | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) 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": [],