I attached the problem as a file:
Where did the trig functions go? I sifted through the different trig identities and formulas, but couldn't find anything that I could use. What should I do?
I attached the problem as a file:
Where did the trig functions go? I sifted through the different trig identities and formulas, but couldn't find anything that I could use. What should I do?
$ \begin{align} & (\sin(t)+\cos(t))^2+(\sin(t)-\cos(t))^2 \\ & = \sin^2(t)+\cos^2(t)+2\cos(t)\sin(t)+\sin^2(t)+\cos^2(t)-2\cos(t)\sin(t) \\ & =2(\sin^2(t)+\cos^2(t)) \\ & =2 \end{align}$