- #1
Saladsamurai
- 3,020
- 7
[tex]\cos (t)=\cos(t+2\pi)[/tex]
I know it is kind of silly, but I need to do it.
I could have sworn that a sum formula would have worked, ie.,
[tex]\cos(\alpha+\beta)=\cos \alpha \cos \beta -\sin \alpha \sin \beta[/tex]
but when I sub in [tex]t[/tex] and[tex] 2\pi[/tex] for the RHS, I am getting [tex]-\cos t[/tex]
Where did I go wrong...
Casey
Edit: IDK why LaTex alpha isn't showing on RHS
I know it is kind of silly, but I need to do it.
I could have sworn that a sum formula would have worked, ie.,
[tex]\cos(\alpha+\beta)=\cos \alpha \cos \beta -\sin \alpha \sin \beta[/tex]
but when I sub in [tex]t[/tex] and[tex] 2\pi[/tex] for the RHS, I am getting [tex]-\cos t[/tex]
Where did I go wrong...
Casey
Edit: IDK why LaTex alpha isn't showing on RHS
Last edited: