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.
yes
no!
Nope!
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
Hit the second button, it allows all the keys on the TI-83 to have a second function. Now, hit the plus button. There should be a MEM on top of it, this stands for memory. Now scroll down using the arrow keys to the 7th option, which says reset. It will confirm that you want to clear the RAM. Then press YES. Your TI-83 plus is reset.