Final answer:
There are two modes on a calculator: degree and radian. The mode you need to use depends on the type of calculations. To change the mode, look for the 'mode' or 'mode settings' button.
Step-by-step explanation:
There are two modes on a calculator: the degree mode and the radian mode.
The mode your calculator needs to be set on depends on the type of calculations you are performing.
If you are working with degrees, you should set your calculator to the degree mode. If you are working with radians, you should set your calculator to the radian mode.
To change the mode on your calculator, you can usually find a button or function key labeled 'mode' or 'mode settings'.
Press this button and you will be able to toggle between the degree and radian mode.
Some calculators may also have other modes, such as gradient or decimal, that you can select based on your needs.