Fix #319

Author: ricktu288

src/core/equation.js

@@ -25,6 +25,9 @@ export function evaluateLatex(latex) {
     .replaceAll("\\arcsin"," asin")
     .replaceAll("\\arccos"," acos")
     .replaceAll("\\arctan"," atan")
+    .replaceAll("\\sin^{-1}"," asin")
+    .replaceAll("\\cos^{-1}"," acos")
+    .replaceAll("\\tan^{-1}"," atan")
     .replaceAll("\\sinh"," sinh")
     .replaceAll("\\cosh"," cosh")
     .replaceAll("\\tanh"," tanh")