Numbers: Click number buttons (0-9) to enter numbers.
Operations: Use the operators for basic arithmetic (+, -, *, /).
Trigonometric Functions: Click a number for trigonometric calculations followed by "sin", "cos", or "tan".
Inverse Trigonometric Functions: Click a number for trigonometric calculations followed by "asin", "acos", or "atan" for inverse trigonometric calculations.
Logarithmic Functions: Use "log" for base-10 log and "ln" for the natural log.
Square Root (√): Click the "√" button for square roots.
Cube Root (∛): Click the "∛" button for cube roots.
Power (x²): Click "x²" for squaring a number.
Clear: Click "C" to clear the display, or "DEL" to delete the last entered character.