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

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SUMMARY

The process for calculating cos^2(5) on a TI-83 or TI-89 calculator involves specific key sequences. For calculators that display input, users should press 'cos', then 'x^2', followed by '5'. For models without a display of the input, the sequence is to first input '5', then press 'cos' to compute cos(5), followed by 'x^2' to square the result. This method ensures accurate calculation of the cosine squared value.

PREREQUISITES
  • Understanding of trigonometric functions, specifically cosine.
  • Familiarity with TI-83 or TI-89 calculator operations.
  • Knowledge of using the exponentiation function on calculators.
  • Basic mathematical notation for squaring numbers.
NEXT STEPS
  • Research the full capabilities of the TI-83 and TI-89 calculators.
  • Learn about trigonometric functions and their applications in mathematics.
  • Explore advanced calculator functions, including graphing and programming on TI calculators.
  • Study the differences between calculator models for enhanced functionality.
USEFUL FOR

Students, educators, and anyone using TI-83 or TI-89 calculators for trigonometric calculations and mathematical problem-solving.

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cos^2 (5)

in a calculator
 
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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.
 
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.
 

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