let steps = “”; function calculateResult(){ steps=””; const number = parseFloat(document.getElementById(“inputNumber”).value); const operation = document.getElementById(“operation”).value; if (isNaN(number)) { alert(“Please enter a valid number.”); return; } let result; switch(operation) { case “sin”: result = Math.sin(number); break; case “cos”: result = Math.cos(number); break; case “tan”: result = Math.tan(number); break; case “log”: result = Math.log(number); break; case “sqrt”: result = Math.sqrt(number); break; default: result = “Invalid operation.”; } document.getElementById(“result”).value = result.toFixed(2); steps += `Inputs:
Number: ${number}

`; steps += `Formula:
Operation: ${operation}

`; steps += `Result:
Calculated Result: ${result.toFixed(2)}
`; if(document.getElementById(“calculationSteps”).style.display === “block”){ document.getElementById(“calculationSteps”).innerHTML = steps; } } function resetCalculator(){ document.querySelectorAll(“#calculator input”).forEach(el => el.value = “”); steps = “”; document.getElementById(“calculationSteps”).innerHTML = “

Not calculated yet.

“; } function toggleSteps(){ const s = document.getElementById(“calculationSteps”); const a = document.getElementById(“toggleArrow”); if(s.style.display === “none” || s.style.display === “”){ s.style.display = “block”; a.style.transform = “rotate(180deg)”; s.innerHTML = steps || “

Not calculated yet.

“; } else { s.style.display = “none”; a.style.transform = “rotate(0deg)”; } }