From b2967d0c81946971c86fe680ffac1fa574e9e661 Mon Sep 17 00:00:00 2001
From: Teptao <1650163832@qq.com>
Date: Sat, 11 Oct 2025 19:47:23 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E9=99=A4=E9=9B=B6bug?=
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---
 .../mathapp/problemGenerators/HighSchoolProblemGenerator.java  | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/mathapp/problemGenerators/HighSchoolProblemGenerator.java b/src/main/java/com/mathapp/problemGenerators/HighSchoolProblemGenerator.java
index db8733d..cf6bdc1 100644
--- a/src/main/java/com/mathapp/problemGenerators/HighSchoolProblemGenerator.java
+++ b/src/main/java/com/mathapp/problemGenerators/HighSchoolProblemGenerator.java
@@ -42,7 +42,8 @@ public class HighSchoolProblemGenerator extends MiddleSchoolProblemGenerator {
 
       // 2c.【健壮性检查】检查这个新运算符是否会与三角函数的值构成除零错误
       boolean isTrigValueZero = (function.equals("sin") && angleInDegrees == 0) ||
-              (function.equals("tan") && angleInDegrees == 0);
+              (function.equals("tan") && angleInDegrees == 0)||
+              (function.equals("cos") && angleInDegrees == 90);
 
       // 如果新运算符是除法，且三角函数的值是0，则这是一个非法组合，必须重试
       if (connectingOperator == Operator.DIVIDE && isTrigValueZero) {