Trig Confusion: Is Sine2pi=0 and Cos2pi=1 an Error?

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  • Thread starter Thread starter ThomasMagnus
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    Confusion Error Trig
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Discussion Overview

The discussion revolves around the correctness of the trigonometric values sine(2π) and cos(2π) as reported by an online learning tool. Participants explore whether the tool's feedback indicating these values as incorrect is an error, and they touch on the implications of using radians in trigonometric functions.

Discussion Character

  • Debate/contested, Technical explanation

Main Points Raised

  • One participant questions if the use of radians is appropriate in the context of the online tool's feedback.
  • Another participant suggests ensuring that the correct point is being manipulated in the tool, implying a possible user error.
  • A participant expresses frustration with online learning tools, suggesting that they prefer traditional methods and find issues with the shift towards digital education.
  • There is a suggestion that if there is an error, it could be due to either user error or a glitch in the online program.

Areas of Agreement / Disagreement

The discussion does not reach a consensus on whether the online tool is correct or if there is a misunderstanding regarding the use of radians. Multiple competing views regarding the reliability of online tools versus traditional methods are present.

Contextual Notes

Participants do not clarify the assumptions regarding the settings of the online tool or the definitions being used for trigonometric functions.

ThomasMagnus
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Hello,

I just started trigonometric functions, and the online learning tool keeps saying "incorrect" to sine2pi=0 and "incorrect" to cos2pi=1

Is this an error?

Thanks :)
 
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Are you sure you're supposed to use radians?
 
Here's a screen shot of it

Untitled-13.png


Thanks
 
Make absolutely sure you're dragging the right point. Otherwise, raise unholy hell with the math prof.

Side note/rant: This is one of the many reasons why I detest the shift towards online practice. It has literally reached the point where, if at all possible to make an A in the class without doing the online homework, I won't do the online homework -- purely out of protest. Grr.
 
^Are you equally indignant when you find errors in books and pen and paper assignments? Mistakes existed before computers. What are the other many reasons you detest online practice?
 
Either you're not dragging to the correct point, or there's a glitch in the program.
 

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