Update index.html

Author: Gmac4247

index.html

@@ -997,25 +997,28 @@ <h4 style="font-size:160%;margin:7px">Trigonometry</h4>
   return bestMatch;
 }
 
+
 function Asin(x) {
   if (typeof x !== 'number' || isNaN(x) || x < 0 || x > 1) return null;
 
   let radian = null;
 
   if (x > 0.706) {
-    // Direct match
+    // Direct match via sine
     const match = closestValue(x, 'sin');
     if (!match?.angle) return null;
     const parsed = match.angle.match(/rad\(([\d.]+)\)/);
     if (!parsed) return null;
     radian = parseFloat(parsed[1]);
   } else {
-    // Reflective zone
+    // Reflective match via cosine
     const match = closestValue(x, 'cos');
     if (!match?.angle) return null;
     const parsed = match.angle.match(/rad\(([\d.]+)\)/);
     if (!parsed) return null;
-    radian = parseFloat(parsed[1]);  }
+    const angle = parseFloat(parsed[1]);
+    radian = parseFloat((1.6 - angle).toFixed(3));
+  }
 
   return radian;
 }
@@ -1026,19 +1029,21 @@ <h4 style="font-size:160%;margin:7px">Trigonometry</h4>
   let radian = null;
 
   if (x < 0.708) {
-    // Direct match
+    // Direct match via cosine
     const match = closestValue(x, 'cos');
     if (!match?.angle) return null;
     const parsed = match.angle.match(/rad\(([\d.]+)\)/);
     if (!parsed) return null;
     radian = parseFloat(parsed[1]);
   } else {
-    // Reflective zone
+    // Reflective match via sine
     const match = closestValue(x, 'sin');
     if (!match?.angle) return null;
     const parsed = match.angle.match(/rad\(([\d.]+)\)/);
     if (!parsed) return null;
-    radian = parseFloat(parsed[1]);  }
+    const angle = parseFloat(parsed[1]);
+    radian = parseFloat((1.6 - angle).toFixed(3));
+  }
 
   return radian;
 }