Math Help: Checking IN cos and sin Answers

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SUMMARY

This discussion focuses on verifying the correctness of cosine and sine calculations. A user seeks assistance in confirming their answers, providing a link to their work. A key takeaway is the importance of ensuring that the calculator is set to degrees mode rather than radians mode, as this can significantly affect the results of trigonometric functions.

PREREQUISITES
  • Understanding of trigonometric functions, specifically cosine and sine
  • Familiarity with calculator settings, particularly radians vs. degrees
  • Basic knowledge of how to interpret and share mathematical work online
  • Ability to navigate image-sharing platforms for educational purposes
NEXT STEPS
  • Learn how to switch between radians and degrees on scientific calculators
  • Explore the unit circle and its application in trigonometry
  • Study common trigonometric identities and their proofs
  • Practice solving trigonometric equations using both radians and degrees
USEFUL FOR

Students studying trigonometry, educators teaching math concepts, and anyone needing clarification on the use of calculators for trigonometric functions.

db1
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Could someone take a ganders at this and see if i have it right please? i just want to make sure i got cos and sin right. if you could do the question and see if you get the same it would be great. thanks for your help
i just put a link to the page i uploaded it to, i don't know how to downsize the pic and i don't want to slow down the browser, i hope this is ok
http://tinypic.com/view.php?pic=bhnk89&s=5
 
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can anyone help with this please?
 
It looks like your calculator is in radians mode. You need to switch to degrees mode.
 

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