I can't work out how to use my calculator pleae help exam sunday

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SUMMARY

The discussion centers on troubleshooting the Texas Instruments Inspire CX calculator for trigonometric calculations. The user initially struggled with obtaining correct results for a specific formula involving cosine functions. A key resolution was provided by another user, emphasizing the importance of ensuring the calculator is set to degrees instead of radians, which resolved the issue for the original poster.

PREREQUISITES
  • Understanding of trigonometric functions, specifically cosine.
  • Familiarity with calculator settings, particularly mode settings for degrees and radians.
  • Basic knowledge of using the Texas Instruments Inspire CX calculator.
  • Ability to interpret mathematical formulas and expressions.
NEXT STEPS
  • Research how to change settings on the Texas Instruments Inspire CX calculator.
  • Learn about common trigonometric functions and their applications in calculations.
  • Explore troubleshooting techniques for scientific calculators.
  • Study the differences between degrees and radians in trigonometry.
USEFUL FOR

Students preparing for exams, particularly in mathematics or engineering, and anyone using the Texas Instruments Inspire CX or Casio FX82AU calculators for trigonometric calculations.

Pete789
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1. I have two calculators. including the Texas inspire cx. I can't make either of them work reliably on trig questions. I have an exam sunday and i need to be sure how to use my inspire.
2. Summation: [50][0.5] + [50][0.07cos35] + [100][0.1cos35] = 13.55
3. Now i got this formula off my uni textbook. However, i consistently get the wrong answer. The internet and the book that came with my inspire are useless.

Anyone with an inspire or casio fx82au.. please help

Pete
 
Last edited:
Physics news on Phys.org
If you are using degrees in your trig formulas, make sure the calculator is set to degrees rather than radians.
 
Yep right, got it thanks Steamking. Now it works

Peter
 

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