If you choose **Degrees**, all arguments of the trigonometric functions will be considered to be in degrees and the inverse trigonometric functions will give results expressed in degrees.

Similarly if you choose **Radians**, all arguments of the trigonometric functions will be considered as being in radians and the inverse trigonometric functions will give results expressed in radians.

The unit of angles is displayed in the top banner of the screen as **deg** or **rad**.

If you choose **Auto**, the numerical values will be displayed according to calculator presets so that they are as appropriate as possible for each application.

If you choose **Scientific**, the numerical values will be displayed in scientific form. A **sci** indicator then appears in the top banner of the screen to indicate that your results are displayed in scientific notation.

You can choose the number of digits to display for the results by directly modifying the value in the section **Significant figures**. The maximum number of digits that can be displayed is 14.

You can choose the editing mode of mathematical expressions: in one (linear) or in two dimensions (natural).

If you choose $a+ib$, complex results will be displayed in rectangular form.

If you choose $re^{i \theta}$, complex results will be displayed in polar form. In this case, the argument in the exponential will always be given in radians, even if the angle unit is set to **Degrees**.

You can adjust the brightness of the screen using the directional arrows.

To change the calculator language. You can choose between **English**, **French**, **Spanish**, **German** and **Portuguese**.

Select **Exam Mode** in the application **Settings** then press **OK**.

A **Activate Exam Mode** button appears. Press **OK** to activate the exam mode.

A message appears indicating that the activation of the exam mode will erase the data. Choose **Confirm** and press **OK**.

You are now in exam mode.

Enabling the exam mode deletes all recorded data: calculation history, variables, function list, statistical series, Python scripts,…

When the exam mode is active, a symbol appears in the yellow band at the top of the screen to indicate it and the LED on the front edge of the calculator flashes red.

You can only exit the exam mode by connecting the calculator to a computer via a USB cable. As soon as you connect the machine, a message appears asking you if you want to exit the exam mode. Choose **Confirm** and press **OK**.

You are no longer in exam mode: the symbol **Exam mode** disappears from the display and the LED stops flashing red.

This screen gives you access to the software version number that is installed on your calculator as well as the serial number of your device.