There is not cos2 button on a TI-83 plus. You will need to enter the cosine function and then square it. (Press the x2 button to get the squared function.) To type cos2(90) on a TI-83 plus, for example, type: cos(90)2
Yes
The answer is approximately 77,459.666924148. I got the answer with a TI-83 plus graphing calculator.
Press [2nd] > [x-1] > [1]
One can purchase a TI-83 calculator in online stores such as Amazon or eBay. In addition, stores such as Walmart or Costco will sell the calculator model.
Nope!
no!
yes
I actually need a complete tutorial for the TI-83. I lost mislaid the guide that accompanied the calculator. Any ideas on some free tutorials?
graphing calculators only. TI-83 and TI-84 calculators.
xe-x
No, in order to download apps to your TI-83, you need a cable that connects your calculator and the computer, or a cable to connect to another TI-83.