A. This problem occurs when the calculator’s angle mode is not correct for the current input/output graph range settings. You need to change the x-min, x-max, y-min, y-max, and other settings on the calculator’s View Window to match the output range you want.
The following are operations you can perform on your calculator to initialize View Window settings so they are compatible with the currently selected angle mode.
fx-CG Series, fx-9860G Series, CFX-9850 Series (fx-9750G PLUS, fx-9750G):
1. Press [SHIFT] and then [F3] to display the View Window.
2. Press [F2] (TRIG) to initialize input/output graph range settings so they match the current angle mode.
3. Press [EXIT] and then [EXE] to draw the graph correctly.