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

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 :)
 
Mathematics news on Phys.org
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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