General

Q10: When I try to graph a trigonometric function like Y=sin(X), the graph on my calculator appears as a straight line. What do I need to do to produce the graph of a sine wave?
A10: 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.
You can perform on your calculator to initialize View Window settings so they are compatible with the currently selected angle mode.