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

[ThomasMagnus]

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 :)

 

[Doc Al]

Are you sure you're supposed to use radians?

 

[ThomasMagnus]

Here's a screen shot of it

Thanks

 

[Angry Citizen]

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.

 

[lurflurf]

^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?

 

[gb7nash]

Either you're not dragging to the correct point, or there's a glitch in the program.