What is the process for calculating cos^2(5) on a TI-83 or TI-89 calculator?

[afcwestwarrior]

cos^2 (5)

in a calculator

 

[rock.freak667]

If you have a calculator that shows what you are typing in, you can just press cos,x²,then 5.

If you have one that doesn't show what you type in, you'd need to press 5, then cos [this will calculate cos5] and then press x², this will square it and give you what you want.

 

[kmikias]

what kind of calculator are you using.If you are using I-83 or 89 .you can type cos,then click 2nd then x or (just click x then ^ then 2) after that press 5.