diff --git a/src/main/java/com/eliotlash/molang/functions/classic/Acos.java b/src/main/java/com/eliotlash/molang/functions/classic/Acos.java
index ad87dd9..0283862 100644
--- a/src/main/java/com/eliotlash/molang/functions/classic/Acos.java
+++ b/src/main/java/com/eliotlash/molang/functions/classic/Acos.java
@@ -21,7 +21,7 @@ public int getRequiredArguments() {
 	@Override
 	public double _evaluate(Expr[] arguments, ExecutionContext ctx) {
 		double a = this.evaluateArgument(arguments, ctx, 0);
-		if (a > 1) {
+		if (Math.abs(a) > 1) {
 			return 0;
 		}
 		return Math.acos(a);
diff --git a/src/main/java/com/eliotlash/molang/functions/classic/Asin.java b/src/main/java/com/eliotlash/molang/functions/classic/Asin.java
index 9e781ed..1c88c3f 100644
--- a/src/main/java/com/eliotlash/molang/functions/classic/Asin.java
+++ b/src/main/java/com/eliotlash/molang/functions/classic/Asin.java
@@ -21,7 +21,7 @@ public int getRequiredArguments() {
 	@Override
 	public double _evaluate(Expr[] arguments, ExecutionContext ctx) {
 		double a = this.evaluateArgument(arguments, ctx, 0);
-		if (a > 1) {
+		if (Math.abs(a) > 1) {
 			return 0;
 		}
 		return Math.asin(a);
diff --git a/src/main/java/com/eliotlash/molang/functions/classic/Atan.java b/src/main/java/com/eliotlash/molang/functions/classic/Atan.java
index 0c2bad8..b65a44d 100644
--- a/src/main/java/com/eliotlash/molang/functions/classic/Atan.java
+++ b/src/main/java/com/eliotlash/molang/functions/classic/Atan.java
@@ -21,7 +21,7 @@ public int getRequiredArguments() {
 	@Override
 	public double _evaluate(Expr[] arguments, ExecutionContext ctx) {
 		double a = this.evaluateArgument(arguments, ctx, 0);
-		if (a > 1) {
+		if (Math.abs(a) > 1) {
 			return 0;
 		}
 		return Math.atan(a);	}
diff --git a/src/main/java/com/eliotlash/molang/functions/utility/MinAngle.java b/src/main/java/com/eliotlash/molang/functions/utility/MinAngle.java
new file mode 100644
index 0000000..4436b31
--- /dev/null
+++ b/src/main/java/com/eliotlash/molang/functions/utility/MinAngle.java
@@ -0,0 +1,28 @@
+package com.eliotlash.molang.functions.utility;
+
+import com.eliotlash.molang.ast.Expr;
+import com.eliotlash.molang.functions.Function;
+import com.eliotlash.molang.utils.Interpolations;
+import com.eliotlash.molang.variables.ExecutionContext;
+
+public class MinAngle extends Function {
+
+	public MinAngle(String name) {
+		super(name);
+	}
+
+	@Override
+	public int getRequiredArguments() {
+		return 3;
+	}
+
+	@Override
+	public double _evaluate(Expr[] arguments, ExecutionContext ctx) {
+		double result = this.evaluateArgument(arguments, ctx, 0);
+		// Clamp the result to -360 to 360, then add 360 to make it positive, then mod 360 to get the positive angle
+		result = ((result % 360) + 360) % 360;
+		// If the result is greater than 180, subtract 360 to get the negative angle
+		if (result > 179) result -= 360;
+		return result;
+	}
+}
diff --git a/src/main/java/com/eliotlash/molang/variables/ExecutionContext.java b/src/main/java/com/eliotlash/molang/variables/ExecutionContext.java
index 431fd34..4f4148d 100644
--- a/src/main/java/com/eliotlash/molang/variables/ExecutionContext.java
+++ b/src/main/java/com/eliotlash/molang/variables/ExecutionContext.java
@@ -61,6 +61,7 @@ public ExecutionContext(Evaluator evaluator) {
         registerFunction("math", new Trunc("trunc"));
         registerFunction("math", new Lerp("lerp"));
         registerFunction("math", new LerpRotate("lerprotate"));
+        registerFunction("math", new MinAngle("min_angle"));
         registerFunction("math", new Random("random"));
         registerFunction("math", new RandomInteger("random_integer"));
         registerFunction("math", new DiceRoll("dice_roll"));